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Colt Serial Number List And FAQ

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Colt Serial Number List and FAQ

Colt Serial Number Prefix Model Name Sample Model

BD AR15A3 Tactical Carbine 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 6450 6430

TA: There are only around 10,000 TA model Cot guns and less than 8000 without sear block.

Year Serial Number Range

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

CC001616 and Below

CH019500 and Below

GC018500 and Below

LH011326 and Below

MH086020 and Below

NL004800 and Below

SL027246 and Below

SP360200 and Below

ST038100 and Below

TA10100 and Below

BD000134 and Below (AR-15A3 Tactical Carbine - very rare model)

MT00001 and Above POST BAN

BK000001and Above (CAR-A3) POST BAN

CST000001 and Above (Began Late 1997 Production) POST BAN

CMH000001 and Above POST BAN

CCH010000 and Above - Post Ban MT6700, MT6700C and MT6700CH series, 1998 production POST BAN

Serial Number Information Courtesy Geremy Chubbuck

ALL COLT SERIAL NUMBERS SHOULD BE VERIFIED FROM THE MANUFACTURER PRIOR TO ANY PURCHASE OR ASSEMBLY. Do not rely on this data only, call the manufacturer for details!

New URL: http://www.hk94.com/...r-list-and-faq/

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Colt Model Numbers

by Michael Jones:

Rxxxx =

'pre-ban' configuration (bayo lug, flash suppresor; 'transition models' might only have flash suppresors and are probably 'blocked')

MTxxxx =

'post-ban' configuration (fixed stock, NO bayo lug, NO flash suppressor)

xxxxdc =

upper conversion kits

xxxxdh =

Delta HBAR

R6000

AR15, 20", 1in12 twist, several flash suppresors, bayo lug

R6001

AR15 Carbine, 16" standard, 1in12 twist, collapsable stock

R6222

.22 conversion kit

R6420

AR15a2 Carbine, 16" standard, 1in7 twist, a2 birdcage, bayo lug

R6430

Sporter Lightweight, 9mm, 16" standard, 1in10 twist

R6430dc

MT6430

post-ban 6430 (stock???)

R6450

Sporter Lightweight, 9mm carbine, fixed stock

R6500

AR15a2, 20" standard, 1in7 twist, a2 birdcage, bayo lug

R6510

AR15a2, .222 cal, 20" standard

R6520

AR15a2 Government Model Carbine, 16" lightweight, 1in7 twist, a2 birdcage, bayo lug, collapsable stock

R6520dc

R6530

Sporter Lightweight, 16" lightweight, 1in7 twist, a2 birdcage

R6530dc

MT6530

post-ban 6530

R6550

AR15a2 Government Model, 20" standard, 1in7 twist, a2 birdcage, bayo lug

R6550cc

same as 6550 with Z-Coat green tiger stripe camouflage finish, matching soft case

R6550k

Sporter Target, 6550 without bayolug, with 6222 .22 conversion kit

R6551

Sporter Target, same as 6550k without .22 conversion kit

R6551dc

MT6551

post-ban 6551

R6600

AR15a2 HBAR, 20" HBAR, 1in7 twist, a2 birdcage, bayo lug

R6600dh

AR15a2 Delta HBAR, same as 6600 + 3x9 Tasco, ARMS mount, cheekpiece, hardcase

R6600k

Sporter Match HBAR, same as 6600 without bayolug, with 6222 .22 conversion kit

R6601

Sporter Match HBAR, same as 6600k without conv.kit

R6601dc

R6601dh

Sporter Match Delta HBAR, same as 6601 + 3x9 Tasco, ARMS mount, cheekpiece, hardcase

MT6601

post-ban 6601

AR6620dc

M4 upper conv.kit, 16" standard, 1in7 twist, a2 birdcage, bayo lug, side sling adaptor

NOTE 67xx series barrels are NOT chrome lined unless noted

R6700

Sporter Competition HBAR, 20" HBAR, 1in9 twist, flattop

R6700ch

Sporter Competition HBAR, range selected, chosen for superior accuracy

R6700dc

R6700s

Sporter Competition HBAR, same as 6700 + 3x9x40mm Tasco and carry handle

MT6700

post-ban 6700

MT6700dc

R6701

Sporter Competition HBAR, lmtd.ed. 2000 rifles(???), 1in9 twist, flattop

R6721

AR15a3 Tactical Carbine, 16" HBAR chrome lined, 1in9 twist, flattop, a2 birdcage, bayo lug, collapsable stock, 134 manufactured pre-ban

R6721dc

R6724

Sporter Competition HBAR, 24" HBAR, 1in9 twist, flattop, shaved front sight

R6724dc

upper conv.kit

R6731

AR15a3 Competition HBAR, 16" HBAR, 1in9 twist, flattop, a2 birdcage

R6731dc

MT6731

post-ban 6731

MT6731dc

R6750

Sporter Competition HBAR, 20" Extra Heavy HBAR, 1in7 twist(???), special handguard, bipod

R6821dc

upper conv.kit, 7.62x39, 16" HBAR, 1in12 twist, flattop, a2 birdcage

R6830

Sporter Lightweight, 7.62x39, 16" lightweight, 1in12 twist, a2 birdcage

R6830dc

MT6830

post-ban 6830

R6850dc

upper conv.kit, 7.62x39, 16" HBAR, 1in12 twist, flattop, a2 birdcage

R6851dc

upper conv.kit, 7.62x39, 20" HBAR, 1in12 twist, flattop, a2 birdcage

R6900

???, 20" HBAR, 1in9 twist, a2 birdcage

R6900dc

upper conv.kit

shouldn't this be MT6900dc?

MT6900

upper conv.kit, 20" HBAR, 1in9 twist

is there an R6920 complete rifle? LEO/Military only?

AR6920dc

M4 upper conv.kit, 16.1" standard, 1in7 twist, flattop, a2 birdcage, bayo lug, carry handle, side sling adaptor

RO6920dc

M4 upper conv.kit, 14.5" standard, 1in7 twist, flattop, a2 birdcage, bayo lug, carry handle, side sling adaptor

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Colt Commercial Variants AR-15 and M-16 Rifles

Excellent resource for identification of Colt rifles with Model Number, Model Name, Caliber, Barrel Length, Barrel Contour, Barrel Twist, Weight, Forward Assist, Bayonet Lug, Case Deflect, Lower receiver style, Rear Sight, Grip, Flash Hider, Buttstock type, Pull, Barrel Slipring, Handguard, Fire Control, Cyclic rate (rpm).

http://www.biggerham.../ar15/variants/

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I have a Orginal Colt R6721 from the Factory. I purchased it in August 1994. serial #000217

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Update: More data on M16 serial numbers, manufactureres, and dates.

"That data base from Colt and printed in SAR contains enough typos and errors to be close to worthless to all but the most learned student.

Here is an updated/expanded/corrected version:

USGI SERIAL NUMBER DATA BASE (serial numbers listed in chronological rather then numerical order):

101-14,484

1959-1963

US Air Force/Project AGILE/SEAL issue Colt's AR-15 Model 601, roll marked ARMALITE. Some sold commercially to police departments, small numbers to foreign militaries such as Malaya, India, Australia, Burma, and Singapore.

20,000-39,999

1963-1964

US Property marked AR-15 Colt's Model 02 issued to US Advisors in Vietnam, and US Air Force. Few hundred commercial/export examples were made that lack US Property markings.

40,000-49,999

1964

US Property marked US Air Force M16 Colt's Model 604.

50,000-199,999

1964-1965

US Property marked US Air Force M16 Colt's Model 604 & US Army XM16E1 Colt's Model 603.

14,500-14,916

1965

Commercial/export CAR-15 series and US Property marked GX series for S.A.W.S. contract (note, CAR-15 refers to a family of Colt's weapons, not just short ones).

15,000-19,999

1965

Commercial/export CAR-15 series.

200,000-202,446

1965

Commercial/export CAR-15 series.

202,447-379,353

1965

US Property marked US Air Force M16 Colt's Model 604, and a few commercial export models. There are also examples of commerical/export marked models using the 20X,XXX serial number range produced in the late 1960's.

400,000 series

1966-1973 or so

Only a few rifles/carbines made in this serial number range and known examples are spread out over several years of production. Zero US Property marked rifles have been observed. Highest know example is 418,XXX and dates from the early 1970’s.

500,001-749,999

1966-1967

US Property marked XM16E1 Colt's and M16A1, both Colt Model 603. There are also a small number of US Air Force M16 Colt's Model 604 found in this serial number range. Serial numbers in this range were not run in order. M16A1’s have been observed with serial numbers as low as 604,505, and XM16E1’s have serial numbers as high as 741,12X.

750,000-752,443

1966

Experimental HBAR.

752,444-899,999

1967

US Property marked M16A1.

900,000 through 909,999

1966-1970

US Property marked Govt. Carbines.

910,000-919,999

Unconfirmed, only know of one Colt in this range, it is in US Air Force inventory, and I do not know the model number.

920,000-999,999

No known examples.

1,000,000-1,999,999

1968-1969

US Property marked Colt's M16A1

2,000,000-2,24X,XXX

1968-1971

US Property marked H&R M16A1.

3,000,000-3,469,217 (approximate)

1968-1971

US Property marked Hydramatic M16A1.

9,000,0000 series

1970’s & 1980’s

In general these are 1970’s and early 80’s “A1” type 600 series commercial/export marked weapons. There are some exceptions, for example US Property marked Govt. Carbines.

AL prefix

1970

Lebanese contract rifles, some 14,000 made.

Note on 4,000,000 series Colt’s, there are quite a few commercial/export marked rifles/carbines mixed in.

4,000,001-4,060,000

1970

US Air Force M16 Colt Model 604.

4,060,001-4,221,800

1970

US Property marked M16A1.

4,221,801-4,285,400

1970

US Air Force M16 Colt Model 604.

4,285,401-4,521,000

1970

US Property marked M16A1.

4,521,001-4,521,850

1970

US Air Force M16 Colt Model 604.

4,521,851-4,638, 400

1970

US Property marked M16A1.

4,638,401-4,643,400

1971

Model 613 for Malaysia.

4,643,401-4,701,400

1971

US Property marked M16A1.

4,701,401-4,701,900

1971

Model 613 Commando

4,701,901-4,844,400

1971

US Property marked M16A1.

4,844,401-4,849,400

1972

Model 613 for Taiwan.

4,849,401-4,926,000

1972

US Property marked M16A1.

4,926,001-4,928,000

1972

Model 613 for Philippines.

4,928,000-4,936,400

1972

US Property marked M16A1.

5,000,000-5,4X,XXX (app)

1973-1982

US Property marked M16A1 Colt's Model 603 (not aware of any Air Force M16 Colt Model 604's with serial numbers this high). Also some export/commercial models.

6,000,000-6,590,478 (approximate)

1983-1986

US Property marked M16A2 & US Property marked XM4 prototypes Colt's Model 720.

8,000,000 series

1980’s

In general these are 700 series commercial/export marked models of the M16A2.

7,000,000-7,429,766 (approximate)

1988-2003

US Property marked FN M16A2. There are also Balimoy M16A1 lowers restamped A2 in this serial number range. These were used as replacement parts by Anniston.

W prefix

1994-current

US Property marked Colt's M4/A1 Carbine, Colt's Model 920/921.

A prefix

1990’s on

900 series Commercial/export versions of the M4 Carbine.

10,000,000 serial number range

1997-

US Property marked Colt's/FN M16A4"

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I have a Colt AR15 6920, serial number LE053399 and I can't find it anywhere in the Serial Number List. Can you tell me when it was manufactured?

Don Phillips

squawvally@aol.como

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