The buttstock is indeed, the early version that lacks any provisions for the internal storage compartment, that is correctly fitted with a solid rubber/plastic buttplate with no provisions for the later trap door. various AR-15-type assault rifles such as those manufactured by Colt, E.A.
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It is also fitted with it original slimmer black plastic pistol grip, early triangular handguards (early unmarked versions lacking the "R" and "L" on the inner aluminum shields.) Features the early style buttstock. It still retains its original first generation (and very rare) old style, large head, two-piece 'Edgewater' recoil buffer. As you didn't list the third digit in your rifle's serial number, I posted the two years cut-off for you. Some sold commercially to police departments, small numbers to foreign militaries such as Malaya, India, Australia, Burma, and Singapore.
COLT SP1 SERIAL NUMBERS SERIAL NUMBER
The 1982 start number was listed at SP158201. 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. It retains its original internal parts with the early style selector switch. According to the chronology list in 'Black Rifle II', your rifle was made in 1981 or 1982. The bolt is also the early Colt version that is all chrome plated and marked "M" and "P". The carrier has the larger hole in the side for the early solid head machined firing pin keeper. It has the early commercial Colt bolt carrier that lacks the notching on the side later added for the forward assist. The barrel is fitted with the early three-prong flash hider with correct ' checkered ' lock washer. The right side of the barrel beneath the sight post rings is stamped with the proof "M" and triangle Colt stamping. It is fitted with the early original Colt marked parts such as the original non-chrome lined barrel with and "s" & "12" marking.
COLT SP1 SERIAL NUMBERS FULL
This was the the first full year of Colt AR 15 production. Thanks for the reply, so if my serial number is SP 135XXX what is the year of manufacture Colt AR-15 Serial Number List I am pretty excited to get out and.
![colt sp1 serial numbers colt sp1 serial numbers](https://digitalfasr311.weebly.com/uploads/1/2/4/1/124122933/523699893.jpg)
The lower receiver has the Colt four line markings with the four digit serial number "SER SP 02296" indicating production in 1964. It has the early style upper receiver with no provisions for a forward assist and the correct early Colt "triangle" proof mark on the upper receiver. Important Information Concerning AR - 15 - Type Rifles ammunition sales ended by 922 ( b ) ( 5. RIFLE IN FANTASTIC CONDITION! FOUR DIGIT SERIAL NUMBER! One of the nicest examples in existence! NO issues at all and this rifle is 100% correct and all original as issued in 1964! Nothing has been altered, refinished or replaced EVER! This is an outstanding "first year" 1964 production Colt AR-15 SP1 semi-automatic rifle.