Colt AR-15 A2 Government Carbine R6520 Pre-Ban 5.56 NATO, 16 in Pencil Barrel, GC-Prefix
This Colt AR-15 A2 Government Carbine (R6520) is a pre-ban, GC-prefix example from the 1988–1994 era with its original A2 features intact. It features a 16-inch lightweight pencil barrel with 1:7 twist, a gray hard-coat anodized finish, and the early Colt Fiberlite two-position stock. The carbine retains its correct A2 sights, birdcage flash suppressor, and bayonet lug, and comes with two 20-round USGI-pattern magazines, the owner's manual, and cleaning brushes.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: The rifle is in great shape with a few minor scratches and small blemishes on the exterior finish.
What’s Included
- 2x 20-round USGI-pattern aluminum STANAG magazines
- Owner's manual
- Cleaning brushes
This R6520 Government Carbine is a pre-1994 GC-prefix configuration with period-correct features, including the A2-pattern birdcage flash suppressor and bayonet lug. The lower is marked "AR-15 A2 GOV'T CARBINE" and "CAL. .223" on the magwell—typical for Colt commercial lowers of this era—while the factory barrel/chamber is 5.56 NATO as marked. The receivers wear the correct gray hard-coat anodized finish associated with this era of production.
The 16-inch steel pencil-profile barrel uses a 1:7 twist and is marked "C MP 5.56 NATO 1/7." It runs a carbine-length gas system and retains the A-frame front sight base with bayonet lug and sling swivel. The barrel is threaded and fitted with the standard A2 flash suppressor.
The upper is the fixed carry handle A2 pattern with case deflector and forward assist. Sighting is handled by the A2 iron system with an A2 rear drum adjustable for windage and an 8/3 elevation drum. A straight (non-delta) slip ring and the large two-piece front pivot screw reflect the correct period details.
Furniture includes the early Colt Fiberlite two-position collapsible stock with checkered buttplate, the A2 pistol grip, and round carbine-length ribbed polymer handguards. The rifle operates via semi-automatic, direct impingement, includes a manual safety, and accepts detachable STANAG magazines. Capacity is 20+1 as configured with the included magazines.