CMMG Endeavor MK4 .22 ARC 20in Midnight Bronze Upper Receiver Group (28B3D0C-MB)

Endeavor is CMMG's full-length rifle series, and the Endeavor MK4 Complete Upper Group is absolutely superb for long range hunting and target shooting. Part of CMMG's Mk4 lineup, this upper is compatible with CMMG's Mk4 lower receiver as well as any standard mil-spec AR-15 lower receiver. For top tier accuracy, the Endeavor Mk4 upper is fitted with a 20-inch barrel made from 4140 chrome moly steel and with a nitride finish for durability. A CMMG EML15 handguard features M-LOK slots at the 3, 6, and 9 o'clock positions for easy addition of lights, bipods, and more.

Instead of having a full length Picatinny top rail, the EML15 features Picatinny slots only at the front and rear of the handguard to remove additional weight. Additionally, an ambidextrous charging handle makes it easy to charge the upper with one hand and because this upper includes a bolt carrier group, all you need to do is drop the upper onto a compatible lower and it is ready for action. Ideally suited for longer range shooting or general purpose use, the Endeavor Mk4 complete upper might be the perfect component for your next AR build project.