The CMMG Resolute MK4 300BO 16.1 Coy is a semi-auto AR-style rifle chambered in .300 AAC Blackout. It has a 16.1″ barrel and a capacity of 30+1 rounds.
Delivering a heavy-hitting .30 caliber round on target, .300 BLK was originally designed around being a subsonic round for use in shorter barrel, suppressed rifles. Additionally, .300 BLK set out to utilize as many M4/AR15 parts and ammo components as possible. Great for home defense and suppressed use in subsonic loadings. Built on the Mk4 AR15 platform. Features EML handguard, full length M-LOK slots on both sides and the bottom of the handguard as well as M-LOK between the top picatinny rail sections; ZEROED parts including: pistol grip, drop-in trigger, 60/90 degree ambi safety, ambi mag catch, extended mag release button, muzzle brake AR15- bolt catch, polymer dust cover and ambi charging handle. Includes Magpul 30rd PMAG.
Specifications
- Brand: CMMG
- Model: Resolute MK4 300BO 16.1 Coy
- Manufacturer Part #: 30AE70ACT
- UPC: 810144724058
- Caliber: .300 AAC Blackout
- Action: Semi-Auto
- Barrel Length: 16.1″
- Twist Rate: 1:7″
- Capacity: 30+1 Rounds
- Safety: CMMG Zeroed 60/90 Degree
Not available to ship to: IL, OR, RI, WA.
Ships to a licensed FFL dealer for transfer. The buyer must pass the required background check and meet all federal, state and local laws.







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