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. Colt ar15 serial numbers. 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.

Serial Number Prefix	Model Name	Sample Model
BD	6721
CC	Colt Carbine	R6520
CH	Competition HBAR	6700
GC	Government Carbine	6520
GS	Governmodel Model Service	6550
MH	Match HBAR	6601
ML	Match Lightweight	R6530
MT	Match Target
SP	Sporter	SP1 or SP2
ST	Sporter Target	6551
TA	9mm	64506430

Above Information Courtesy Stokes

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, mostly from the Internet.

ALL SERIAL NUMBERS SHOULD BE VERIFIED FROM THE MANUFACTURER PRIOR TO ANY PURCHASE OR ASSEMBLY.

It should be clearly noted that it is a felony to possess a Post-Ban (newly assembled after Sept 13, 1994) assault weapon. Please note that BATF has ruled that 'Pre-ban' and 'Grandfathered' are two different things. A Pre-ban lower is only grandfathered if it: 1. was a complete rifle prior to 9/13/94; 2. possessed two banned features (pistol grip and CAR stock assembled); or 3. was part of a complete weapon kit, either assembled or not. This list does not discern between 'Pre-ban' and 'Grandfathered' as it is very nearly impossible to find that detail of information.

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. Finally, BATF has allowed some pre-ban damaged to be replaced with post-ban lowers with numbers outside the ranges given below while retaining the grandfathered status. They will send a letter documenting this and allowing the original manufacturer to proceed with the replacement.

Colt (800) 962-COLT

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

Serial Number Information Courtesy Geremy Chubbuck

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

Colt Commercial Variants

Colt Ar-15 A2 Gov T Carbine Serial Numbers Chart

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.

Colt Ar-15 A2 Gov T Carbine Serial Numbers

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

Ahnlab v3 internet security crack. 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.

Colt Ar-15 A2 Gov T Carbine Serial Numbers For Sale

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Colt Ar-15 A2 Gov T Carbine Serial Numbers

Last Modified on September 24, 1999
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