Upper Mk4 K 5.56mm

Description

Upper MK4 K 5.56mm

The Mk4 K Upper Group includes the RKM11 KeyMod free floating hand guard. The barrel is a nitrided 4140 CrMo steel 12.5? barrel available in both 5.56x45mm and 300 AAC Blackout. Each Upper Group is covered by CMMG?s lifetime quality guarantee.

Description:

Caliber: 5.56mm
Barrel: 12.5? medium weight multi-role profile
Muzzle: A2 comp., threaded 1/2-28
Hand Guard: CMMG RKM11 KeyMod hand guard
Receiver: Forged 7075-T6 AL M4 type

Share this Product

More from this collection

"n" Cell Batteries - (6 Pack)

$9.56

"swiss Pattern" Black Polymer Vertical Fore Grip

$11.51

1'' Nylon-brass Hammer

$19.99

10-22 Competition Trigger Kit (ajustable)

$126.11