Endeavor 100 MK4 Upper Features CMMG’s ENDEAVOR 100 Upper Group Kit is chambered in Hornady’s 6mm ARC. Designed for superior long-range accuracy, this upper group kit features a 20-inch barrel and includes one 10-round magazines so that you can easily pair with your existing AR15 lower receiver and squeeze out every drop of ballistic performance from this exciting new caliber. Endeavor 100 MK4 Upper Specifications Caliber: 6mm ARC Model: Endeavor 100 Series: MK4 Barrel Length Range: 20″ to 20.99″ Sights: None, Optic Ready Capacity: 10rd Muzzle: A2 Compensator Firearm Fit: AR-15 Handguards: 15″ CMMG RML M-LOK Includes: Magazine Receiver Finish: Black Hard Coat Anodized Receiver Material: 7075 T6 Aluminum Thread Pattern: 5 / 8″-24 tpi Twist: 1:7.50″ Weight: 5.40 lbs Barrel Description: Medium Taper Barrel Finish: Black Nitride Barrel Material: 416R Stainless Steel Barrel Length: 20″
New in Box
Finish Per Color
Manufacturer Part Number
Endeavor 100 MK4 Upper
The CMMG Endeavor 100 MK4 Upper delivers an excellent choice for an AR-style rifle build with its dependability, durability, and consistency. It comes chambered in 6mm ARC with a 20 inch barrel. Features include an optics ready flat-top, an M-LOK handguard, and a 10 round magazine. Get this upper today for the best price online from GrabAGun!