Colt AR-15A4 5.56 NATO 20" Rifle, Direct Impingement, A2 Stock, Carry-Handle Sights, 4x 30-Round Magazines
This Colt AR-15A4 pairs the classic A4 configuration with verified Colt markings and a 20" rifle-length system. The barrel is marked "C MP 5.56 NATO 1/7," indicating Colt manufacture and magnetic particle inspection, and the lower is roll-marked with the Colt logo and AR-15A4 model. It features a fixed A2 stock, A-frame front sight base, carry-handle rear sight assembly, and comes with four 30-round magazines.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: Superficial scratches and blemishes are present on exterior surfaces. The bore displays a bright, mirror-like appearance.
What’s Included
- Four 30-round USGI-pattern aluminum AR-15/M16 magazines
The AR-15A4 configuration delivers a 20" steel barrel with a 1:7 twist and a rifle-length gas system for full-length performance in 5.56mm NATO. The direct-impingement action is paired with a threaded muzzle and an A2-pattern flash hider.
Colt factory markings add clarity and provenance. The barrel is stamped "C MP 5.56 NATO 1/7," and the lower receiver is roll-marked with the Colt logo and AR-15A4 model designation.
The rifle retains the A2 sighting setup with an A-frame front sight base and a carry-handle rear sight assembly. Furniture includes two-piece ribbed rifle-length polymer handguards, a fixed A2 stock with a rear sling loop, and an A2 grip. Bayonet lug and sling swivels are present.
Black-anodized aluminum receivers and black furniture complete the classic appearance. Capacity is 30+1, and this example includes four 30-round magazines to match the platform.




