Colt CR6920 5.56 NATO AR-15 Carbine, 16 in Chrome-Lined M4 Barrel, Flat-Top, A2 Front & Flip-Up Rear Sights, 30+1
This Colt CR6920 is a full-size 5.56 NATO AR-15 carbine built around a 16-inch chrome-lined M4-profile barrel with a 1:7 twist. It features a flat-top upper with T-marked Picatinny rail, a fixed A2 front sight base with bayonet lug, and a polymer flip-up rear aperture sight. The rifle comes with manual, and two 30-round Magpul PMAG GEN M3 magazines.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are minimal markings from previous handling or use. Please refer to the photos for close-up views.
What’s Included
- No box included
- Colt AR-15 safety and instruction manual
- Two 30-round Magpul PMAG GEN M3 polymer magazines
The CR6920 uses a semi-automatic, direct-impingement action with a carbine-length gas system. Its 16-inch chrome-moly-vanadium steel barrel is chrome-lined, cut with the M4 profile and M203 notch, and capped with an A2 flash hider on a threaded muzzle. The 1:7 twist rate supports a wide range of 5.56 NATO projectile weights.
The flat-top upper receiver provides a T-marked Picatinny rail with T4–T12 index numbers visible. Both upper and lower receivers are 7075-T6 aluminum with a hard-coat anodized finish. The barrel is marked "C MP 5.56 NATO 1/7," and the rifle is made in the United States.
Furniture includes a collapsible, adjustable stock with an integral sling slot (13.5-inch length of pull) and an A2 pistol grip. A carbine-length, two-piece ribbed polymer handguard completes the M4-style configuration. Sighting is handled by a fixed A2 front sight base with a bayonet lug and a polymer flip-up rear aperture sight.
The rifle accepts STANAG-pattern detachable box magazines and has a maximum capacity of 30+1. It incorporates a manual safety and features a CR-prefix serial range with a factory QR/data-matrix code on the magwell.