Colt CR6920 5.56 NATO Semi-Auto AR-15 Rifle, 16 in Chrome-Lined M4 Barrel, 1:7 Twist, Black
The Colt CR6920 is a factory-configured AR-15 carbine built around a 16 inch chrome-lined M4-profile barrel with the M203 step and a 1:7 RH twist. It features a forged 7075-T6 aluminum receiver set, a carbine-length direct-impingement gas system, and an F-marked front sight base with bayonet lug. A Magpul MBUS polymer flip-up rear sight is installed, and one 30-round PMAG is included.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: Minor scratches and blemishes are present on exterior surfaces consistent with light handling.
What’s Included
- Colt CR6920 5.56 NATO semi-automatic rifle
- Magpul MBUS polymer flip-up rear sight (installed)
- One 30-round Magpul PMAG Gen M2 MOE magazine
The 16 inch M4-profile barrel is chrome-lined, threaded, and fitted with an A2 flash hider. Factory barrel markings read 13629 M P 5.56 NATO 1/7, indicating Colt’s CAGE code and magnetic particle testing. The M203 step is present, and the F-marked front sight base includes a bayonet lug.
The upper is a T-marked flat-top design for precise accessory indexing, paired with a CR-series lower rollmark that includes a QR code. Both receivers are forged from 7075-T6 aluminum and finished in matte black.
Furniture is true to the carbine format: a carbine-length two-piece M4-type polymer handguard, a 6-position collapsible stock, and an A2 pistol grip. A standard manual safety is present.
Sight setup comprises the fixed F-marked A2 front sight and the installed Magpul MBUS rear aperture. The rifle accepts standard AR-15 magazines and has a 30+1 capacity.