Colt CR6920 5.56 NATO AR-15 Carbine, 16.1 in Chrome-Lined M4 Barrel, 1:7 Twist, Excellent
This Colt CR6920 is a current CR-series carbine that succeeds the LE6920, built on forged 7075-T6 receivers with a flat-top upper and T-marked Picatinny rail (T4–T12). It features a chrome-lined, magnetic particle–inspected M4-profile barrel with a 1:7 twist and a carbine-length gas system with a pinned A2 front sight base and bayonet lug. The rifle includes a folding rear aperture sight and comes in excellent condition with a clean, mirror-bright bore.
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: The rifle shows minimal handling evidence. The bore is bright with a mirror finish.
What’s Included
- Colt factory cardboard box with CR6920 label (factory label lists "223 REM"; the rifle itself is chambered 5.56 NATO as marked on the receiver and barrel)
- Colt AR-15 Semiautomatic Rifles and Carbines Safety and Instruction Manual
- Folding rear aperture sight installed on receiver rail
- 1x 30-round Magpul PMAG polymer magazine for AR-15/5.56x45
The 16.1-inch barrel is chrome-lined, marked "MP 5.56 NATO 1/7," and capped with an A2 birdcage flash suppressor secured by a crush washer. Colt’s magnetic particle inspection and 1:7 twist support reliable performance with standard 5.56mm NATO loads.
The carbine-length gas system pairs with a pinned A2 front sight base that includes a bayonet lug. Two-piece ribbed polymer M4-type handguards with seven vent holes per side and a delta ring complete the classic carbine setup.
The forged 7075-T6 upper carries a square forge mark and a flat-top, T-marked receiver rail (T4–T12). The lower is marked "CARBINE CAL. 5.56 MM" with Colt Defense Hartford rollmarks. Colt’s CAGE code "13629" appears on the upper and barrel, along with the MP barrel stamp.
Furniture includes a collapsible polymer stock with a checkered buttplate and sling loop, plus an A2 pistol grip. The rifle uses a semi-automatic, direct-impingement action with a manual safety and accepts STANAG-pattern detachable magazines.