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PRODUCT #60A86D7 Endeavor 300 Rifle
Mk4, 6mm ARC

$1,799.95

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$1,799.95

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Endeavor 300 Rifle, Mk4, 6mm ARC

If you want the best an AR has to offer, then the 300 Series is your choice. This AR is fitted with every desired feature including a choice of 10 Premier Cerakote colors, laser engraved model name on the lower receiver, updated ambidextrous controls and sling points along with a premium trigger, Magpul grip, PRS stock, CMMG's revolutionary RIPSTOCK or RIPBRACE, and CMMG's SV muzzle brake. These are just a few of the possible upgrades on this series. Chambered in 6mm ARC, this AR is ready for the range.

The Mk4 platform accepts standard AR15-style magazines, and is the most versatile of the CMMG platforms, especially with the .22 LR, 5.7x28mm (Conversion), and 9mm conversions.

CMMG’s ENDEAVOR designated marksman and distance rifle lineup is designed for superior long-range accuracy, the ENDEAVOR line features a 20-inch barrel so that you can squeeze out every drop of ballistic performance from this exciting new caliber. Each rifle ships with one 10-round magazine.

All Products come with CMMG’s Lifetime Quality Guarantee.

Technical Specifications

Platform Mk4
Caliber 6mm ARC
Barrel Length 20
Barrel Twist 01:07.5
Barrel Contour MT
Barrel Material 416SS, SBN
Barrel Twist 01:07.5
Muzzle Device CMMG SV Brake
Muzzle Thread 5/8 X 24
Gas Port Location Rifle
Gas Block SLR Adjustable 0.750
Upper Receiver 7075-T6 AL M4 Type Upper
Lower Receiver AR15
Hand Guard CMMG RML15 M-LOK
Finish Cerakote Receivers, Handguard, RipStock
Charging Handle CMMG Oversized Ambi
Pistol Grip Magpul MOE
Receiver Extension CMMG A1 Extension
Stock / Brace Magpul PRS
Trigger Type Geissele Automatics SSA 2-Stage
Trigger Guard Integrated Into Lower
Safety Selector CMMG Ambi
Magazine 10rd
Weight 9.1

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