CMMG Resolute Mk4 300 BLK 16.1" 30rd Rifle

The CMMG Resolute Mk4 in 300 Blackout is a carbine for shooters who want a .30 caliber bullet from an AR-15 that still uses standard magazines and most M4 parts. 300 BLK was first built around subsonic loads for short, suppressed guns, and with supersonic ammo it competes with 7.62x39mm. The 16.1 inch barrel has a medium taper, a fast 1:7 twist suited to heavy bullets, and a carbine length gas system. A CMMG ZEROED muzzle brake is threaded 5/8-24.

The Mk4 lower is forged aluminum with a billet upper, both in Armor Black Cerakote. CMMG's EML15 handguard has M-LOK slots at 3, 6 and 9 o'clock plus a top M-LOK section in place of a full length rail, keeping weight down to 6.2 lbs. The CMMG RipStock on a 6 position Fastback extension adjusts fast, and ZEROED parts cover the ambidextrous charging handle, ambidextrous mag catch, extended mag release, single stage trigger and 60/90 degree safety. One Magpul 30 round PMAG is included. It works well for home defense, suppressed shooting or hunting deer and hogs.