Manufactured in 1964, the second year of SP1 rifle production at Colt, with an approximate serial number range of SP00101 to SP02501. Features standard markings on the slab side lower receiver, with three-prong flash hider on the "M" and "S" marked barrel, standard post front sight on the "A" frame gas block with bayonet lug, windage adjustable flip up two-leaf rear peep sight on the upper receiver with fixed carry handle, no forward assist, short deflector, unserrated bolt carrier with chrome plated firing pin and "M/P" bolt along with and flathead retainer pin, and two-piece buffer. Fitted with a checkered pistol grip, long vented triangular handguard, fixed buttstock with ribbed rubber buttpad, and black M1 pattern web sling.

Excellent, retaining 97% plus original black anodized and oxide finishes with some minor edge wear, limited spotting/brown patina on the steel parts, and limited minor handling marks. The furniture is also excellent. Mechanically excellent. It would be difficult to improve on an early production Colt SP1 rifle such as this example!