CMMG 55BB40BAB Resolute MK4 5.56x45mm NATO 16.10″, Armor Black, M-LOK Free-Float Handguard for AR-Platform (No BCG or Charging Handle)
$463.12
The CMMG Resolute MK4 upper is a no-nonsense 5.56 NATO build for shooters who want a reliable, modular platform without paying for extras they don’t need. The 16.10″ barrel pairs excellent velocity with practical handling, while the M-LOK free-float handguard keeps your groups tight and your rail options open.
Description
Built for AR builders and shooters who demand accuracy without compromise, the CMMG Resolute MK4 upper ships as a complete receiver assembly with a hammer-forged 16.10″ barrel and free-floating M-LOK handguard in Armor Black. The free-float design eliminates handguard pressure on the barrel, giving you consistent accuracy whether you’re running factory loads or reloads. This upper accepts standard AR-15 bolt carrier groups and charging handles (sold separately), making it the perfect foundation for a hunting rifle, 3-gun build, or duty carbine. The 1/2″-28 threaded muzzle accepts virtually any modern brake or suppressor, and the M-LOK slots give you unlimited attachment flexibility without rail clutter.
Additional information
| UPC | 810103473461 |
|---|---|
| Ammunition Caliber | 5.56x45mm NATO |
| Mfr Item Number | 55BB40BAB |
| Manufacturer |
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