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Home>Complete Uppers

MK4-K 12.5" Complete Upper

Part Number MK4 K-Upper-CMMG
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MK4-K 12.5" Complete Upper
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$774.95
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Description

When seeking a short affordable and quality complete upper, the Mk4 K is the upper of choice.

The Mk4 K is equipped with CMMG's RKM11 KeyMod free float hand guard. Available with a 4140 nitrided CrMo steel, 12.5" medium taper profile barrel in 5.56mm or .300 BLK. Each rifle includes CMMG's lifetime quality guarantee.

Short barrels have become a common thing now with entry teams and the size conscious crowd.  This is for good reason, you can get just as much accuracy out of a 12.5" gas gun, and when you affix your suppressors you pick up a few lost feet per second.  Actually a shorter barrel is often stiffer and that translates into further accuracy gains.  

This is a great gas gun upper configuration for any sort of mission where size matters.  Maneuver it easily into the truck, helo or room, ruck through the mountains or anything else you require of it.

Specs:

Caliber: 5.56mm or .300 Blackout
Barrel: 12.5 medium tapered multi-role profile
Muzzle: A2 compensator, threaded 1/2x28 (5.56mm) or 5/8x24 (300 BLK)
Hand Guard: CMMG RKM11
Receiver: Billet 6061-T6 

*Also includes complete bolt carrier group and charging handle

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