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CMMG AR-15 300 AAC Blackout MK4 Upper Assembly 16" Barrel
CMMG AR-15 300 AAC Blackout MK4 Upper Assembly 16" Barrel
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CMMG AR-15 300 AAC Blackout MK4 Upper Assembly 16" Barrel

Item #: 30B129A
$675.00
Qty:

This item is on backorder.

Will Ship once in stock.

This CMMG AR-15 Upper Assembly is chambered for 300 AAC Blackout and is ready for drop-in use on any standard small pin lower receiver. When modularity, affordability, and quality are all important the...>> Read More

This CMMG AR-15 Upper Assembly is chambered for 300 AAC Blackout and is ready for drop-in use on any standard small pin lower receiver. When modularity, affordability, and quality are all important the Mk4 T is the upper of choice. The Mk4 T introduces CMMG's RKM series of KeyMod free float hand guards. This upper sports an 11" RKM hand guard and a nitrided 4140 CrMo steel barrel in a medium taper profile.

Technical Information:
Upper Receiver: Forged 7075-T6
Barrel Length: 16"
Barrel Contour: Medium
Barrel Material: 4140 Chrome Moly Steel
Muzzle Thread Pattern: 5/8"-24
Barrel Finish: Salt Bath Nitride
Twist Rate: 1 in 7"
Chamber: 300 AAC Blackout (7.62 x 35mm)
M4 Feed Ramps: Yes
Muzzle Device: A2 Flash Hider
Gas System Length: Carbine
Gas Block Diameter: 0.750"
Handguard: CMMG RKM-11 Mid-Length, Free Float
Bolt Carrier Assembly Included: Yes

Compatible with all standard AR-15 magazines (including Pmags), Magazine NOT Included.