Colt M4 Carbine CR6920 5.56 NATO, 16.1 in Chrome-Lined 1/7 Barrel, AR-15 Platform, Compliant-Style Mag-Release Lock
This recent-production Colt CR6920 stands out with its 16.1 in chrome-lined 4150 CMV M4-profile barrel, forged 7075-T6 receivers, and Colt-marked details, including the 13629 CAGE code and MP proof. It is configured with a compliant-style magazine-release lock and comes with four 10-round PMAGs and a Pelican Vault hard case.
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: Mild wear and scuffs are present from light handling.
What's Included
- Pelican Vault hard rifle case
- 4x 10-round Magpul PMAG GEN M3 polymer magazines (5.56x45)
Built on the AR-15 platform, the CR6920 pairs a semi-automatic, direct-impingement system with forged 7075‑T6 aluminum upper and lower receivers finished in hard-coat anodized matte black. The flat-top upper features a T-marked MIL-STD-1913 Picatinny rail, and the lower carries a 2D data matrix. Model designation is CR6920 with CR-series serial prefix.
The 16.1 in M4-profile barrel is 4150 CMV steel, chrome-lined, phosphate finished, and uses a carbine-length gas system with a 1:7 twist. It is threaded 1/2x28 and fitted with an A2 birdcage flash hider. Factory markings include "13629 M P 5.56 NATO 1/7" with MP proof on the barrel.
Sighting equipment includes a pinned A2 front sight base with bayonet lug and side sling swivel, paired with a folding USGI Matech-style rear sight. Furniture is classic M4 pattern: a collapsible stock, A2-pattern pistol grip, and two-piece ribbed polymer handguards.
This rifle is configured for a compliant-state style mag-release, with a magazine-release lock installed. Capacity is 10+1, and it comes with four 10-round Magpul PMAG GEN M3 magazines to match the configuration.