Colt Ar-15 A2 Gov T Carbine Serial Numbers

5.56mm nato pre ban 1980 colt sp1 carbine 16 inch ' barrel topeka, ks 66618: new: 4/12/2021: $1,575.00.223 rem. Ar-15 vietnam-era colt sp1 (m16a1) upper built on new cmmg lower w a2 buttstock 20 inch ' barrel houston, tx 77098: new old stock: 4/3/2021: $3,076.00: colt ar-15 sp1.223 rifle r6000.unfired. tucson, az 85718: new old stock: 3/30.

PREBAN AR15 INFORMATION RESOURCES | PRE BAN AR 15

PRE BAN AR 15

Because of the jumbled numbers, call Krista and she can tell you what status the rifle had when they last saw it. Colt - Colt’s Manufacturing P.O. Box 1868 Hartford, CT 06144 (203)-236-6311 “Randy” All “Match Target” rifles are Post-ban. Colt actually has serial number cutoffs, these are the last Pre-ban numbers in each series. Colt AR-15 Serial number, YEAR? Colt AR-15 A-2 Sporter Govt Carbine.223 Assault Rifle sn GC003716 Only info I can get is it was made prior to 1978, as sn. Colt AR-15 A2 Gov't Carbine R6520 Pre-Ban.223. Description: Colt AR-15 A2 Gov't Carbine in.223 Remington. 16' barrel with bayonet lug, 1:7 twist. 2-position collapsible stock with sling. 800M Adjustable rear sight. No box, so whether it was a green or blue box I do not know. This is As-New, maybe fired a handful of times.

PRE BAN AR 15 information is very valuable to shooters in states that maintain an ASSAULT WEAPON BAN. While I dont normally advocate borrowing content from other websites I feel this information is invaluable and needs to be protected, duplicated and shared for the greater good of the shooting community.

If anyone has more information and links please post them at the bottom and I will update the list. If you have a lower of from one of the lesser known brands and have managed to verify the date to the serial number please add your info to the comments and I will add it to the master list.

OLYMPIC ARMS

What does my serial number have to do with a PRE BAN AR 15?

Q: What does my serial number mean?

A: Nothing is more frustrating than to know little or nothing about the firearm you own or are about to buy. Use the information in this page to help determine when your Olympic Arms AR 15 was produced. Please read all of the details on this page because there are many questions answered in the following paragraphs.

As many of you already know, on the 7th of June, 2000, Olympic Arms experienced a devastating fire that destroyed our sales offices. In those offices were housed our current as well as archival records with regards to manufacture, acquisition and distribution of firearms. The books that we, as well as all federally licensed firearms dealers are required to keep are commonly known as “Bound Books”, or “A&D” (acquisition & distribution) books.

These books, over 25 years of Olympic Arms history and data, were completely destroyed in that fire. All A& D book records prior to the 7th of June, 2000 are GONE. Period. This is an unfortunate situation that severely limits our ability to provide product information for any and all AR-15 lower receivers and/or complete guns manufactured prior to that date. As a result all that we can provide is what you see below, a date “range” in which your serial number was manufactured.

We CANNOT provide you with the date the serial number was shipped, we CANNOT provide you with information determining whether a particular serial number was a factory assembled firearm, and most importantly, we CANNOT determine whether or not your particular serial number is a legal grandfathered pre-ban firearm.

Many people and organizations have been critical of Olympic Arms for not securing a copy of these records elsewhere, or keeping an electronic file of this data as an emergency back up. If you’d like to read why this decision was made, please read the article in the About Us section titled “Pre-fire Bound Books”. Remember that Olympic Arms fully complied, and still does, with ATF regulations regarding A&D books.

Below you will see a list of serial numbers. At Olympic, we group our serial numbered lowers into “ranges”. If you’ll notice, all the serial number ranges have a letter prefix but one. The initial receivers made by Olympic Arms simply contain a 4 digit serial number, no letter prefix. Each subsequent serial number range (either beginning with 0001, or 1001) will show a 1 or 2 letter prefix.

Additionally, you will see several lines for serial numbers that begin with the same letter(s) prefix. These prefix series are divided by a date range to their right. These date ranges are the beginning and ending dates of the physical paper ledgers in which those numbers were recorded. In other words, the ledger books were not large enough to contain all of the numbers (0001-9999), in one book. For that reason, there is a beginning date and end date for each ledger. That is what you see below.

Match your receiver up with the letter prefixes on the chart below. Each line is separated into 5 columns.

Column 1: The serial number itself (including prefix).

Column 2: The beginning serial number in that book.

Column 3: The beginning date for that book. If there is only one date listed after the serial numbers in column 2 and/or 2, all of those numbers were manufactured on that same day.

Column 4: End date for that book.

Column 5: Comments regarding that range of serial numbers. The comments as listed would apply to all of the serial numbers with the prefix listed to the left.

SN Range		1st Date	End Date	Special Notes
0001	0004	03/14/79	Prototypes
1000	8845	03/14/79	06/04/82	Cut from aluminum bar stock. Most were made for other manufacturers such as Palmetto Armory.
X1001	X2987	07/02/1982	06/01/1983
X2988	X3484	06/02/1983	09/01/1983
X2988	X3484	06/02/1983	09/01/1983
P0001A	P0588A	12/17/1982	07/18/1988	PAWS
Z0001	Z2002	09/08/1983	08/24/1984
Z2003	Z3955	05/29/1984	02/08/1985
Z3956	Z6007	02/14/1985	12/12/1985
Z6008	Z8018	12/17/1985	09/10/1986
Z8019	Z9985	09/15/1986	03/09/1988
Z9986	Z9999	03/09/1988
W1001	W2957	03/09/1988	05/08/1989
V0001	V0716	12/02/1986	10/01/1987	These receivers were manufactured for Bushmaster. While all of these are for BM, there were more.
NAMV1	NAMV100	03/20/1985	08/28/1986	These were limited edition Vietnam War Commemoratives.
USMC1	USMC320	01/21/1986	04/05/1993	Limited Edition US Marine Corp Commemoratives
U1001	U1597	08/18/1987	11/28/1989
F1006	F3000	04/27/1989	08/25/1989
F3001	F5052	08/25/1989	12/14/1989
F5053	F9109	12/14/1989	08/10/1990
F9110	F9999	08/10/1990	10/03/1990
T1001	T2119	10/03/1990	01/08/1991
T2120	T3758	01/08/1991	04/05/1991
T3759	T7480	04/05/1991	01/31/1992
T7481	T9532	01/31/1992	08/12/1992
T9533	T9999	08/13/1992	09/24/1992
AA001	09/24/1992	PROTOTYPE
AA1001	AA2297	09/24/1992	12/23/1992
AA2298	AA2425	12/23/1992	01/04/1992
GG1000	GG1009	02/01/1993	07/05/1993
OA1001D	OA1039D	10/07/1991	10/31/1991
OAD1040	OAD1067	03/16/1992	10/09/1992
OAS1042	OAS1138	03/18/1992	10/13/1992
AC10000	AC10058	02/08/1993
LL0001	LL0267	01/05/1993	01/22/1993
BL1000	BL2784	02/01/1993	05/26/1993
BL2785	BL4814	05/26/1993	12/03/1993
BL4815	BL6861	12/03/1993	02/24/1994
BL6862	BL8799	02/25/1994	06/18/1994
BL8800	BL9533	06/20/1994	07/20/1994
BS0001	BS0699	08/27/1994	08/27/1994
BS0700	BS0825	08/27/1994	08/27/1994
NF0001	NF1999	01/03/1994	05/21/1994
NF2000	NF3999	05/21/1994	08/27/1994
NF4000	NF4055	08/27/1994
94NF1000	95NF2587	11/14/1994	01/24/1995
UK0001	UK0448	08/27/1994	08/27/1994
E1001	E2099	09/01/1991	04/24/1997 ?
E2100	E2290	04/24/1997	03/08/1990 ?
CA0001	CA0690	02/21/1994	08/09/1994
TBOR1791	TBOR1991	1991	1991	These receivers are made from Beryllium copper.
CIA0001	CIA3402	10/28/1996	07/14/1997	These receivers were made under contract with Century International Arms. These are NOT Olympic Arms firearms, are post ban and not supported by Olympic Arms.
H1300	H3299	08/27/1994
H3300	H3354	08/17/1994	09/13/1994
95H1112	95H3340	06/06/1995	07/07/1995
V1000	V1499	05/05/1994	05/11/1994
V1500	V2755	05/11/1994	08/05/1994
V2757	V3195	09/26/1997	11/25/1997
SA961000	SA961975	03/21/1996	09/18/1996
SA1975	SA3500	04/15/1997	01/02/1998
SA3501	SA5150	01/01/1998	06/18/1998
SA5151	SA6550	06/18/1998	09/28/1998
SA6551	SA8199	10/05/1998	05/10/1999
SA8200	SA9800	05/11/1999	10/07/1999
SA9801	SA9999	10/07/1999	10/18/1999
AUS1000	AUS1049	05/06/1998	02/01/1999
JJ0001	JJ1600	10/09/1999	02/18/2000
JJ1601	JJ2059	02/18/2000	03/22/2000
JJ2060	JJ4182	03/22/2000	10/03/2000
JJ4183	JJ5439	10/03/2000	02/07/2001
JJ5440	JJ6920	03/08/2001	12/04/2001
JJ6921	JJ8713	12/04/2001	08/06/2001
JJ8714	JJ9999	08/07/2001	01/29/2003
KX0001	KX1601	11/04/1998	05/10/1999
KX1700	KX2935	05/10/1999	08/20/1999
KX2936	KX4735	08/23/1999	01/20/2000
KX4736	KX5760	01/20/2000	03/31/2000
KX5761	KX7668	04/01/2000	07/20/2001
KX7669	KX9590	07/20/2001	04/03/2002
SGW0001	SGW1045	02/15/2000	04/10/2001	All SGW receivers are CAST receivers, and sold stripped, or as “Plinker” Rifles only.
SGW1046	SGW2043	04/10/2001	02/14/2002
SGW2044	SGW3878	03/25/2002	04/05/2003
SGW3879	?	*CURRENT*
MX1001	*CURRENT*	These receivers are match-grade quality Maxhard® treated Aluminum forged receivers.
BT0001	BT1853	05/24/2002	01/20/2003	Series named after long time employee Bill Thrall. Thanks for your service Bill!
BT1854	BT3654	01/21/2003	07/11/2003
BT3655	BT5453	07/11/2003	12/01/2003
BT5454	BT7300	12/02/2003	05/02/2004
BT7301
M0001	M0198	02/20/200203	04/01/2002	Series Stopped because of CNC change.
LP0001	LP0577	05/02/2001	02/19/2004	OA-98 Pistols only
SM0001	SM9999	01/30/2003	10/2005	Series names after Oly CNC programmer Steve Melby. Thanks for your service Steve!
TB0001	TB9999	10/2005	4/2007	Series named after long time employee Tim Butterfield. Thanks for your service Tim!
KJ0001	KJ9999	4/2007	6/2008
JF0001	JF9999	6/2008	9/2009	Series named after long time employee John Fischer. Thanks for your service John!
WZ0001	WZ5686	2/2009	Current	Series named after long time employee Walt Dziadyk. Thanks for your service Walt!
CH0001	CH6575	9/2009	Current	Series named after long time employee Chris Holeman. Thanks for your service Chris!

AR15.com

The folks over at AR15. com have compiled the list below

Disclaimer: This list is correct to the best of my knowledge, however, I accept absolutely no responsibility for the accuracy of this information or for the consequences and/or damages occurring from any inaccuracies. I have compiled this list for the purposes of sharing information only. This is not intended to be used in any way except for personal entertainment. It is a compilation of both personal information and information submitted from others from the Internet. ALL SERIAL NUMBERS SHOULD BE VERIFIED FROM THE MANUFACTURER PRIOR TO ANY PURCHASE OR ASSEMBLY. It should be noted that it is a felony to possess a Post-Ban (newly assembled after Sept 13, 1994) assault weapon.

If any information presented here is found to be incorrect or you have additional information to contribute, please contact me via E-Mail (hkusp40@midmaine.com) and I will update and re-issue the list.

Note: All items marked with a single asterisk (*) are taken from http://home1.gte.net/bblakley/ban/index.htm. The year/serial numbers under Colt SP series was forwarded to me by an individual whose return address I no longer have. Double asterisk (**) under Bushmaster, a person on the internet e-mailed me that he had a lower that was shipped stripped (thus not a complete rifle) in 1991 from Bushmaster with serial #0327XX – ALWAYS CALL TO VERIFY.

Advanced Armaments

No information – Apparently machined from bar stock aluminum, lowers are marked as M-15.

American Spirit Arms (Formerly “Sun Valley Traders”)

ALL lowers are Post Ban AR 15. Began introduction of lowers and rifles in mid/late 1998. Noted as having good fit & finish. Also, reported to be manufactured by Lewis Machine & Tool (LMT).

Armalite | Eagle Arms

Slightly over S/N 30,000 was the Pre Ban AR 15 cut-off, call to verify.* (Some Eagle lowers below the 30,000 range were determined to be POST BAN AR 15 by BATFE – call to verify) Armalite sells Eagle lowers, but sells factory complete rifles with Armalite lowers.

Bohica

Made stainless steel lowers, rumored to have also made AR-15 pistols. Lower marked M16-SA. This is NOT verifiable info as it came from the Internet. Out of Business.

Bushmaster

Below L051000 – Assembled Pre Ban AR 15 Rifles and some pre-94 lowers.**
L051001-L063000 – Mixed Pre Ban Assembled Rifles and Pre-Sept 94 Lowers (Call to verify)
L063001 and Up – Post Ban

Century International Arms

Lower marked CIA. All are Post-Ban. Made with Olympic Arms Receivers under contract.

Colt Firearms

CC001616 and Below – Pre-Ban
CH019500 and Below – Pre-Ban
GC018500 and Below – Pre-Ban
LH011326 and Below – Pre-Ban
MH086020 and Below – Pre-Ban
NL004800 and Below – Pre-Ban
SL027246 and Below – Pre-Ban
SP360200 and Below – Pre-Ban
1963 SP00001-SP00023**
1964 SP00101
1965 SP02501
1966 SP05600
1967 SP08250
1968 SP10750
1969 SP14000-SP14653
1970 SP15001-SP15473
1971 SP16001
1972 SP19401
1973 SP24201
1974 SP32601
1975 SP43801
1976 SP55301
1977 SP67651
1978 SP83400
ST038100 and Below – Pre-Ban
TA10100 and Below – Pre-Ban
BD000134 and Below – Pre-Ban (AR-15A3 Tactical Carbine – very rare model)
MT00001 and Above – Post-Ban
BK000001and Above – Post Ban (CAR-A3)
CST000001 and Above – Post-Ban (Began Late 1997 Production)
CMH000001 and Above – Post Ban
CCH010000 and Above – Post Ban MT6700, MT6700C and MT6700CH series, 1998 production

Dalphon

All are POST ban. Cast 356-T6 Aluminum, hardcoat anodized per mil-spec A-8625

DPMS

Below 10300 – Pre Ban AR 15 Rifles.
Some or all lowers are cast. Black in color. Some lowers are Stainless Steel.

Eagle Arms

Now called ArmaLite. They will not give out a list, but will look up on an individual basis. Lower receiver serial numbers DO NOT begin with EA.

Essential Arms

All are Pre Ban AR 15 Rifles as they went out of business in 1993. (DPMS bought them prior to the Ban) Call DPMS Lower receiver serial numbers begin with EA. Some or all lowers are cast. Light gray coloring. It is rumored that Ruger investment casted the lowers for Essential Arms.

Frankford Arsenal

All are Pre Ban AR 15 Rifles. As rumor has it, Olympic Arms produced the lowers for Frankford Arsenal Call Olympic Arms and then Frankford assembled the weapon. A2 configuration lower. Frankford Arsenal went out of business in 1987. (Info from RudolphoS@aol.com)

Hesse Arms

All AR-15’s are post ban. Manufacturing began late 1997/early 1998.

J.L.M & Sons*

SC001 thru SC250 are Pre Ban AR 15 Rifles. All others are post ban.

Knights Armament Co. aka KAC

Colt Ar-15 A2 Gov T Carbine Serial Numbers Free

All AR-15’s are post ban, very few AR-10’s are pre-ban. No further info at this time.

Military Manufacturing (M2)

All were military/law enforcement only. Full auto lowers were standard, semi were optional. Lowers were machined form raw bar stock with improvements incorporated – 18deg magazine angle and square magazine release.

Nesard

See “Sendra” below.

Olympic Arms (Continued)

4-numbers only – very very old. Probably machined from bar stock.
1-letter and 4# – older receiver, but forgings. (Some are newer, POST ban castings – call to verify.)
2-letters & 4# – most receivers follow this pattern.
2#, 2 letters, 4# – the first two #’s are year of manufacture of the lower.
2 letters, 6# (separated 2 & 4 – e.g. SA 96 0000) – first 2 #’s are year of manufacture.
“ICR” marked lowers are an European customer’s overrun, has an unused additional hole – all ICR lowers are post ban.

Olympic Arms Manufacturer’s Notes:

There were some odd variations and some custom serial numbers mixed in thru the years also. And, some receivers manufactured after the ban have the year stamp after the model name, not in the serial #. and if you don’t see a year stamp on the receiver, it is not necessarily pre-ban.
Serial numbers that end in “D” were duplicates and one was changed using this letter.
Recently some serial numbers have left with one or two letters followed by FIVE numbers. The last numbers are either 5’s or 0’s. 99.9% of these are post-ban.
“Older” does not always mean pre-ban as per Corey Sattler.
“BL” serial number series lowers are transitional with some pre and some post ban. If you have a “BL” you’ll have to call to verify for certain.

Professional Ordinance

All are post ban (including all of the pistols).

PWA

35222 and Below – Pre Ban AR 15 Rifles (Note:Some lowers are cast not forged. Out of business) Post-ban have a year prefix in the serial number. Rumored to have only sold lowers.

Rocky Mountain Arms

Producer of AR-15 type pistols.

Sendra

Post-ban receivers have a circle milled into the side of the magwell. They were originally bead-blasted to a non-glare finish. All others are pre-ban. (This is unverified info…) Also, they used to be NESARD. Rumored to have been owned by Dick Drasen (currently M&A Parts) and produced lowers only out of Barrington, Illinois. No complete guns were sold (again, unverified info).

Colt Carbine R6521

Colt Carbine R6521 – Is a rare Colt of which only a few hundred were made for export purposes. They are not marked Sporter, AR-15 or SP1. These are the only Colt AR15 type weapons allowed to be transferred among Connecticut citizens

Biggerhammer	SIG AMT/PE57/550	Stoner SR-25	Barrett .50	AR15/M16 FAQs
Bushmaster Armpistol	M96 Expeditionary	ANM2	HAC-7

Colt Ar-15 A2 Gov T Carbine Serial Numbers List

Colt Commercial Variants

This table is a mirror of a work in progress by Andy Krywonizka at http://come.to/ar15/ - For the most recent version of the table please visit Andy's site. - Many thanks to Andy for allowing the reproduction of his work here.

This table is intended to be used as a reference for the Colt-series of automatic rifles based on the AR-15 pattern. Currently the R6xxx and some of the military 3-digit series are covered, but not all of the information is complete. If you know something about the rifles listed or find an error, please e-mail me and I'll update the table. The colums I'm specifically seeking info on have violet-colored headers.

Click here for definitions of the terms used in this table.

Model No.

Model Name

Caliber

Barrel Length (in)

Barrel Contour

Barrel Twist

Weight (lbs)

Forward Assist?

Bayonet Lug?

Case Deflect?

Lower receiver

Rear Sight

Grip

Flash Hider

Buttstock
Pull (in)

Barrel Slipring

Handguard

Fire Control

Cyclic rate (rpm)

Added

Dropped

Comments

R6000

AR-15 Sporter
(SP1)

.223

Standard

1:12'

7.5

Yes

Straight

3-prong

Straight

Smooth triangular

Safe, semiautomatic

---

1964

1985

R6001

AR-15 Sporter w/collapsible stock
(SP1 Carbine)

.223

Standard

1:12'

5.8

Yes

Straight

Birdcage

---

Straight

Ribbed shorty

Safe, semiautomatic

---

1977

1985

R6222

AR-15
.22 LR Conversion Kit

.22 LR

---

1.2

---

1990

---

R6420

AR-15 Carbine

.223

Standard

1:7'

5.8

Yes

Tapered

Ribbed shorty

Safe, semiautomatic

---

1985

1987

R6430

Sporter Lightweight

9x19mm

Standard

1:10'

7.1

Yes

Tapered

Ribbed shorty

Safe, semiautomatic

---

1992

---

Has special deflector

R6450

AR-15 9mm Carbine

9x19mm

Standard

1:10'

6.3

Yes

Tapered

Ribbed shorty

Safe, semiautomatic

---

1985

1987

R6500

AR-15A2

.223

1:7'

7.8

Yes

Tapered

Ribbed cylindrical

Safe, semiautomatic

---

1984

1988

Also made in 1989 only

R6510

AR-15A2

.222

1:7' (?)

7.8

Yes

Tapered

Ribbed cylindrical

Safe, semiautomatic

---

Made for export to countries where .223 Rem was considered a military round

R6520

AR-15A2 Gov't Model Carbine

.223

Standard

1:7'

5.8

Yes

A1*

Tapered

Ribbed shorty

Safe, semiautomatic

---

1988

1990

R6530

Sporter Lightweight

.223

Standard

1:7'

6.7

Yes

A1*

Tapered

Ribbed shorty

Safe, semiautomatic

---

1991

---

R6550

AR-15A2 Gov't Model

.223

1:7'

7.5

Yes

A2*

Tapered

Ribbed cylindrical

Safe, semiautomatic

---

1988

1990

R6551

Sporter Target

.223

1:7'

7.5

Yes

A2*

Tapered

Ribbed cylindrical

Safe, semiautomatic

---

1991

---

R6600

AR-15A2 H-BAR

.223

HBAR

1:7'

8.0

Yes

A2*

Tapered

Ribbed cylindrical

Safe, semiautomatic

---

1986

1991

R6600DH

AR-15A2 Delta H-BAR

.223

HBAR

1:7'

10.0

Yes

A2*

Tapered

Ribbed cylindrical

Safe, Semiautomatic

---

1987

1990

3-9X scope, cheekpiece

R6601

Sporter Match HBAR

.223

HBAR

1:7'

8.0

Yes

A2*

Tapered

Ribbed cylindrical

Safe, semiautomatic

---

1991

---

R6601DH

Sporter Match Delta HBAR

.223

HBAR

1:7'

10.0

Yes

A2*

Tapered

Ribbed cylindrical

Safe, semiautomatic

---

1991

1992

3-9X scope, cheekpiece

R6700

Sporter Competition HBAR

.223

HBAR

1:9'

8.5

Yes

A2 (detachable)

Tapered

Ribbed cylindrical

Safe, semiautomatic

---

1992

---

R6700CH

Sporter Competition HBAR (select)

.223

HBAR

1:9'

10.5

Yes

A2 (detachable)

Tapered

Ribbed cylindrical

Safe, semiautomatic

---

1992

---

3-9X scope, cheekpiece

R6700DC

Sporter Conversion Kit

.223

HBAR

1:9'

5.5

Yes

---

none

Tapered

Ribbed cylindrical

Safe, semiautomatic

---

1993

---

Flattop

R6830

Sporter Lightweight

7.62x39mm

HBAR

1:12'

7.5

Yes

Tapered

Ribbed shorty

Safe, semiautomatic

---

1993

---

R6850DC

Sporter Conversion Kit

7.62x39mm

HBAR

1:12'

4.2

Yes

---

none

Tapered

Ribbed shorty

Safe, semiautomatic

---

1993

---

Flattop

R6851DC

Sporter Conversion Kit

7.62x39mm

HBAR

1:12'

5.4

Yes

---

none

Tapered

Ribbed cylindrical

Safe, semiautomatic

---

1993

---

Flattop

R6900DC

Sporter Conversion Kit

.223

HBAR

1:9'

5.8

Yes

---

Tapered

Ribbed cylindrical

Safe, semiautomatic

---

1993

---

633

9mm Submachine Gun

9x19mm

Standard

1:10'

5.4

Yes

Grooved

None

Tapered

Smooth cylindrical

Safe, semiautomatic, full automatic

700-900

Mechanical buffer, flip-down front sight

633HB

9mm Submachine Gun

9x19mm

Standard

1:10'

5.4

Yes

Grooved

None

Tapered

Smooth cylindrical

Safe, semiautomatic, full automatic

700-900

Hydraulic buffer, flip-down front sight

634

9mm Submachine Gun

9x19mm

7 or 10.5

Standard

1:10'

5.4

Yes

Grooved

None

Tapered

Smooth cylindrical on 7' model, ribbed shorty on 10.5' model

Safe, semiautomatic

---

Flip-down front sight on 7' model

635

9mm Submachine Gun

9x19mm

7 or 10.5

Standard

1:10'

5.4

Yes

Grooved

None

Tapered

Smooth cylindrical on 7' model, ribbed shorty on 10.5' model

Safe, semiautomatic, full automatic

700-900 on 7' model, 800-1000 on 10.5' model

Flip-down front sight on 7' model

639

9mm Submachine Gun

9x19mm

7 or 10.5

Standard

1:10'

5.4

Yes

Grooved

None

Tapered

Smooth cylindrical on 7' model, ribbed shorty on 10.5' model

Safe, semiautomatic, 3-shot burst

700-900 on 7' model, 800-1000 on 10.5' model

Flip-down front sight on 7' model

701

M16A2 Rifle

.223

HBAR

1:7'

7.9

Yes

Grooved

13 5/8'

Tapered

Ribbed cylindrical

Safe, semiautomatic, full automatic

700-950

705

M16A2 Rifle

.223

HBAR

1:7'

7.9

Yes

Grooved

13 5/8'

Tapered

Ribbed cylindrical

Safe, semiautomatic, 3-shot burst

700-950

Standard U.S. Military service rifle

715

M16A2 Rifle

.223

HBAR

1:7'

7.9

Yes

Grooved

13 5/8'

Tapered

Ribbed cylindrical

Safe, semiautomatic, full automatic

700-950

719

M16A2 Rifle

.223

HBAR

1:7'

7.9

Yes

Grooved

13 5/8'

Tapered

Ribbed cylindrical

Safe, semiautomatic, 3-shot burst

700-950

720

M16A2 (M4) Carbine

.223

14.5

HBAR stepped

1:7'

5.7

Yes

A1 or A2

Grooved

Tapered

Ribbed shorty

Safe, semiautomatic, full automatic or 3-shot burst

700-950

727

M16A2 Carbine

.223

14.5

HBAR stepped

1:7'

5.7

Yes

Grooved

Tapered

Ribbed shorty

Safe, semiautomatic, full automatic

700-950

733

M16A2 Commando

.223

11.5

HBAR

1:7'

5.4

Yes

Grooved

Tapered

Ribbed shorty

Safe, semiautomatic, full automatic

700-1000

735

M16A2 Commando

.223

11.5

HBAR

1:7'

5.4

Yes

Grooved

Tapered

Ribbed shorty

Safe, semiautomatic, 3-shot burst

700-1000

750

M16A2 Light Machine Gun

.223

MG HBAR

1:7'

12.8

Yes

Grooved

13 5/8'

Tapered

Square LMG

Safe, full automatic

600-750

Bipod, front grip, carry handle, fires from open bolt

Sources: American Rifleman, June 1993, page 80; Colt Datasheets for the M16 Family of Weapons, Colt's Manufacturing Company, Inc.

1 - Colt built several thousand 'bastardized'AR-15's using different lower receivers but the same model number. Dependingon the date of manufacture it may have an A1 or an A2 lower receiver.There doesn't seem to be a definitive list of which rifles have which receiver,or when Colt began using strictly A2 receivers for their AR-15's.

Colt M16 Rifle Models

Courtesy Janes Infantry Weapons 1997/98, and Small Armsof the World (1983) by Edward C. Ezell.
Model
Number

Model Name	Description	Roll Marked (left)	Roll Marked (right)
601	AR-15	AR-15 rifle	Colt Armalite AR15 Patents Pending Cal. .223 Model 01 Serial 0000000
602	AR-15	AR-15 rifle. Early US Government purchase - no forwardassist.	Colt AR-15 Property of US Gov't Cal. .223 Model 02 Serial 0000000
603	M16A1	M16A1 rifle. Originally the XM16E1. Standard US Governmentmodel with forward assist.	Property of US Gov't M16A1 Cal 5.56mm 0000000
603K	M16A1	M16A1 rifle. Produced for South Korea.	M16A1 K0000000	Made in Korea Under License from Colt's, Hartford, CT. U.S.A.
604	M16	M16 rifle. Produced for US Air Force without forwardassist.	Property of US Gov't M16 Cal 5.56mm 0000000
605A	M16 carbine. Carbine version of M16A1 rifle with forwardassist and fixed buttstock.
605B	M16 carbine. Same as Model 605A but with additional three-roundburst limiter; no forward assist.
606	HBAR	Heavy Barrel Assault Rifle (HBAR) without forward assist.Also known as the Heavy Assault Rifle M1.	Mod 606 Cal 5.56mm 0000000
606A	Heavy Barrel Assault Rifle (HBAR) with forward assist.
606B	Heavy Barrel Assault Rifle (HBAR) with forward assistand three-round burst limiter.
607	Submachine gun with sliding buttstock and 10' (254 mm)barrel.
608	CAR-15 survival rifle with 10' (254 mm) barrel and fixedtubular buttstock. About 10 produced.
609	SMG #1 XM177E1 Commando	XM177E1 submachine gun for US Army with 10' (254 mm)barrel and 3.5' (89 mm) long sound/flash suppressor.	Property of US Gov't Commando Cal 5.56mm 0000000
610	S.M.G. #2 XM177	XM177E1 submachine gun for US Air Force with 10' (254mm) barrel.	Property of US Gov't SMG 5.56mm 0000000
610B	XM177E1 submachine gun for US Air Force with additionof three-round burst limiter.
611	HBAR	Heavy Barrel Assault Rifle. Export model of Model 606.	Mod 611 Cal 5.56mm 0000000
611P	HBAR	Heavy Barrel Assault Rifle. Export model of Model 611for the Philippines.	Made by Elisco Tool for the Republic of The Phillipines M16A1 RP0000000	Made in the Phillipines Under License from Colt's, Hartford, CT. U.S.A.
613	AR-15	M16A1 rifle. Export version of Model 603.	Mod 613 Cal 5.56mm 0000000
613P	AR-15	M16A1 rifle. Export version of Model 613 for the Philippines.	Made by Elisco Tool for the Republic of The Phillipines M16A1 RP0000000	Made in the Phillipines Under License from Colt's, Hartford, CT. U.S.A.
614	AR-15	M16 rifle. Export version of Model 604 without forwardassist.	Mod 614 Cal 5.56mm 0000000
614S	AR-15	M16 rifle. Export version of Model 614 license producedby Chartered Industries of Singapore.	C I S Made in Singapore by Chartered Industries of SingaporeLimited Under License from Colt Industries Hartford, Conn, USA Patented
616	HBAR	Heavy Barrel Assault Rifle. Export version of Model 606.	Property of US Gov't Mod 616 Cal 5.56mm 0000000
619	S.M.G.	Submachine gun. Export version of Model 609.	Mod 619 Cal 5.56mm 0000000
620	S.M.G.	Submachine gun. Export version of Model 610.	Mod 620 Cal 5.56mm 0000000
621	HBAR	Heavy Barrel Assault Rifle. Heavy barrel version of Model603.	Property of US Gov't Mod 621 Cal 5.56mm 0000000
629	XM177E2	XM177E2 submachine gun for US Army with 11.5' (292 mm)barrel and 4.5' (114 mm) long sound/flash suppressor.	Property of US Gov't XM177E2 Cal 5.56mm 0000000
630	Submachine gun for US Air Force without forward assistand 11.5' barrel.
633	9 mm submachine gun with 7' (178 mm) barrel and mechanicalbuffer.
633HB	9 mm submachine gun with 7' (178 mm) barrel and hydraulicbuffer.
634	9 mm submachine gun with 10.5' (267 mm) barrel, withoutforward assist.
635	9 mm submachine gun with 10.5' (267 mm) barrel, withoutforward assist.
639	S.M.G.	Submachine gun. Export version of Model 629.	Mod 639 Cal 5.56mm 0000000
640	S.M.G.	Submachine gun. Export version of Model 629 without forwardassist.	Mod 640 Cal 5.56mm 0000000
645	M16A2 rifle. Standard US Government model with revised1 in 7' (1 in 177.8 mm) rifling, 20' (508 mm) barrel and new rear sight.
645E	M16A2 rifle 'Enhanced'. Modified M16A2 with removablecarrying handle for optical sight mounting and flip-up front sight.
649	S.M.G.	Sumachine gun. For US Air Force, with 14' (356 mm) barreland 1 in 12' (1 in 305 mm) rifling.	Property of US Gov't GAU-5/A/A Cal 5.56mm 0000000
651	M16A1 carbine. Export model with 14.5' (368 mm) barreland full size stock.
652	M16A1 carbine. Export model with 14.5' (368 mm) barreland full size stock, but without forward assist.
653	M16A1 carbine. Export model with 14.5' (368 mm) barreland sliding stock.
653P	M16A1 carbine. Export model with 14.5' (368 mm) barreland sliding stock, license produced in the Philippines.	Made by Elisco Tool for the Republic of the Phillipines M16A1 RP0000000	MAde in the Phillipines Under License from Colt's, Hartford, CT. U.S.A.
654	M16 carbine. Export model without forward assist. Fittedwith 14.5' (368 mm) barrel and sliding stock.
655	M16A1 sniper rifle. Experimental model with high profileupper receiver.
656	M16A1 sniper rifle. Experimental model with low profileupper receiver and Sionics suppressor.
701	M16A2 rifle. Export model with full automatic in placeof three-round burst limiter.
702	M16A2 rifle. Export model for United Arab Emirates withM16A1 rear sights and full automatic in place of three-round burst limiter.
703	M16A2 rifle. Export model for the United Arab Emirateswith M16A1 barrel profile and full automatic in place of three-round burstlimiter.
705	M16A2 rifle. Export model with full automatic in placeof three-round burst limiter. Also known as M16A2E3.
707	M16A2 rifle. Export model with three-shot burst limiterand M16A1 barrel profile.
711	M16A2 rifle. Export model with M16A1 rear sight and M16A1barrel profile.
715	M16A2 rifle. Canadian version of M16A2 rifle known asC7 with M16A1 rear sight and M16A2 barrel. License produced by Diemaco.
719	M16A2 rifle. Version of Model 715 produced by Colt withthree-round burst limiter.
720	M4 carbine. Originally known as M16A2 carbine, with 14.5'(370 mm) barrel.
723	M16A2 carbine. Produced for United Arab Emirates andUS Army Delta Force. With M16A1 rear sight, 14.5' (370 mm) barrel and fullautomatic fire capability.
725	M16A2 carbine. Canadian version of M16A2 carbine knownas C8 with M16A1 rear sight and M16A2 barrel. License produced by Diemaco.
725A	M16A2 carbine. Export version of the M16A2 carbine producedby Colt for United Arab Emirates with M16A1 barrel profile.
725B	M16A2 carbine. Export version of M16A2 carbine with M16A2barrel.
727	M16A2 carbine. Carbine with full automatic fire featureproduced for (among others) the US Navy. With 14.5' (370 mm) barrel.
733	M16A2 Commando. Short-barrelled model with full automaticfire, 11.5' (290 mm) barrel and M16A1 rear sight.
733A	M16A2 Commando. Short-barrelled model with three-roundburst limiter in place of full automatic fire, 11.5' (290 mm) barrel andM16A1 rear sight.
735	M16A2 Commando. Similar to Model 733 but with three-roundburst limiter.
737	M16A2 Heavy Barrel Assault Rifle (HBAR). With M16A1 rearsight.
741	M16A2 Heavy Barrel Assault Rifle (HBAR). As Model 737but with M16A2 rear sight.
750	M16A2 Squad Automatic Weapon (SAW). With 20' (508 mm)barrel, bipod and front handguard assembly. Fully automatic.
901	M16A3 rifle. Similar to Model 701 but with flat top railunder carrying handle. Fully automatic.
905	M16A3 rifle. Similar to Model 705 but with flat top railunder carrying handle. Three-round burst limiter.
925	M16A3 rifle. Similar to Model 725 but with flat top railunder carrying handle. Three-round burst limiter.
927	M4A1 carbine. Originally known as M16A3 carbine. Similarto Model 727 but with flat top rail under carrying handle. Fully automatic.In production for Joint DoD Special Forces.
941	M16A3 Heavy Barrel Assault Rifle (HBAR). Similar to Model741 but with flat top rail under carrying handle. Semi and fully automatic.
942	M16A3 Squad Automatic Weapon (SAW). Similar to Model741 but with flat top rail under carrying handle. Fully automatic only.
950	M16A3 Squad Automatic Weapon (SAW). Similar to Model741 but with flat top rail under carrying handle. Fully automatic only.

Definitions

Barrel terms

HBAR: Heavy BARrel,Heavy Barrelled AR, Heavy Barrelled Automatic Rifle, Heavy Barrel AssaultRifle
.223: .223 Remington, 5.56 x 45 mm NATO cartridge
9x19mm: 9 mm Parabellum cartridge
.22 LR: .22 Long Riflerimfire cartridge
1:7': Riflingin the barrel twists clockwise, with any one groove making a complete revolutionevery seven (7)
inches (178 mm).
1:9': Riflingin the barrel twists clockwise, with any one groove making a complete revolutionevery nine (9)
inches (229 mm).
1:10': Riflingin the barrel twists clockwise, with any one groove making a complete revolutionevery ten (10)
inches (254 mm).
1:12': Riflingin the barrel twists clockwise, with any one groove making a complete revolutionevery twelve
(12) inches (305 mm).

Barrel contour/slip ring/handguard terms

Standard: Original thin barrelstyle. Did not stand up to prolonged firing very well giving reducedaccuracy.
A2: Later style of barrel that was tapered at the front sight to thicken theexposed barrel. Apparently to
strengthen the barrel to avoid bending when G.I.'s used it as a pry bar.
HBAR: Lateststyle of barrel that is the same thickness the enitre length through, ratherthan just the exposed
section. Stands up to heat well and gives better accuracy.
HBAR
stepped: New barrel for the M4 carbine designed specifically with a 'step' to accomodatethe M203 grenade
launcher.
Straight: Slip ringretainer between the handguard and the upper receiver that has a straightcylindrical shape.
Typically found only on early AR-15 and M-16 rifles with A1 upper receivers.
Tapered: Slip ring retainer between the handguard and the upper receiver that hasa slight conical shape. Used on
all new AR-15 and M-16 rifles.
Smooth
triangular: The original handguard usedon early AR-15 and M-16 rifles. Still commonly seen today, not usedon
newer rifles. The handguard is a smoothened triangle shape with vent holesat the top.
Ribbed
cylindrical:Newerhandguard used on all modern AR-15 and M-16 rifles. Cylindrical ratherthan triangular, it has
vertical ribs along the entire length of the handguard for better grip. Vent holes are along the top and
bottom.
Ribbed
shorty:Identicalto the Ribbed cylindrical handguard found on modern AR-15 and M-16 rifles,the shorty
handguard differs only by being shorter to accomodate shorter barrel lengths.
Smooth
cylindrical: Special handguard found only on the7' barrel of the 9mm Model 633. It has no ribs and is smooth
along its entire length.
Square
LMG:Bulky square handguard used on the M16A2 MachineGun to vent heat as efficiently and quickly as
possible. Has several holes in the top and bottom to accomodate specialattachments such as a vertical
foregrip and carrying handle.

Flash hider terms

3-prong: Vietnam-era flash suppressorwith three slits and an open front end. Soon changed to closed endafter
vegetation frequently got caught in the prongs.
Birdcage:Newerstyle of flash suppressor that has six openings with a closed front end. Changed to A2-style to
prevent dust kickup when firing.
A2-style:LatestColt flash suppressor that has five openings (two to either side, two diagonallyupwards, and one up) and
a closedfront end. The lack of holes in thebottom of the suppressor avoids kicking up dust when firing.
Vortex: A highly efficient flash suppressor that eliminates all muzzle flash evenfrom very short barrels. Typically
four-pronged and 1/2' longer than the 3-prong suppressor. Newer modelshave the prongs twisted
slightly counterclockwise.

Sight style terms

A1: Original style rear sight that was adjustable for windage only. Adjustmentsrequired the use of a tool or
bullet tip. Flip-type aperatures for short and long-range shootingare provided, the ranges depending on
the firearm.
A2:Newer style rear sight that is adjustable forwindage and elevation up to 800 meters, and requires no tools
for adjustment.

Receiver terms

A1: The original, non-reinforced, slab-sided lower receiver with the exposed magazine release button. Easily recognizable by the smooth right side. Usually accompanied by a straight pistol grip.
A2: Newerlower receiver with reinforcing around the magazine well and a 'fence'around the magazine release button.
Flattop: New style of receiver that lacks the carry handle. Allows for themounting of a wide variety of optical
sighting devices and accessories.

Grip terms

Straight: First production pistol grip. Was straight and had no notches or contours for the fingers or the hand.
Grooved: Later production pistol grip, nowstandard on all new AR-15 and M-16 rifles. Slightly thicker gripwith
a notch for the middle finger for a better grasp.

This page copyright (C) Andrew Krywonizka, 1998-1999. All rights reserved. This page may not be reproduced, mechanically or electronically or otherwise, without express written consent from the author. The Colt logo is a registered trademark of Colt's Manufacturing Company, Inc.

Colt Ar-15 A2 Gov T Carbine Serial Numbers

Last Modified on September 24, 1999
aalbert@biggerhammer.net

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