CMMG’s ENDEAVOR Series Mk4 upper receiver groups in 6.5 Grendel feature a 20-inch, medium taper barrel and come with a CMMG RML15 M-LOK handguard. The ENDEAVOR Mk4 upper receiver group will pair with your existing AR15 lower receiver group and allow you to get the most out of this long-range performer.
CALIBER: 6.5 Grendel
BARREL: 20″, 1:8 twist, 6.5 Grendel, MT, 416SS, SBN
MUZZLE: SV Brake, threaded 5/8-24
GAS PORT LOCATION: Rifle Length
RECEIVER: Forged 7075-T6 AL M4 type upper. Complete with BCG
HAND GUARD: CMMG RML15 M-Lok hand guard
FINISH: Hard Coat Anodized Receiver and Hand Guard (Can be upgraded to Cerakote)
CHARGING HANDLE: CMMG Oversized Ambi
WEIGHT: 5lbs 5oz
All Products come with CMMG’s Lifetime Quality Guarantee
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