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PRODUCT #25AB2EB

Endeavor 300 Rifle
Mk4, .224 Valkyrie

$1,749.95

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$1,749.95

CMMG is temporarily halting the sale of complete firearms, upper receiver groups, lower receiver groups, and Radial Delayed Blowback BCG kits on our website in order to focus on outstanding orders. We apologize for the inconvenience and appreciate your patience as we traverse this extremely busy time. Sign up for notifications on your favorite products to get notified when they become available again or find a local dealer on our dealer page.

Endeavor 300 Rifle, Mk4, 224 Valkyrie

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 MOE grip, PRS stock, and CMMG SV muzzle brake. These are just a few of the possible upgrades on this series. Chambered in .224 Valkyrie, 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 CMMG products come with our Lifetime Quality Guarantee.

Technical Specifications

Platform Mk4
Caliber .224 Valkyrie
Barrel Length 24
Barrel Twist 1:07
Barrel Contour MT
Barrel Material 416SS, SBN
Barrel Twist 1:07
Muzzle Device CMMG SV Brake
Muzzle Thread 1/2 X 28
Gas Port Location Rifle
Gas Block 0.750 Non-Adjustable
Upper Receiver Forged 7075-T6 AL M4 type upper
Lower Receiver AR15
Hand Guard CMMG RML15 M-LOK
Finish Cerakote Receivers, Handguard, RipStock
Charging Handle CMMG ZEROED Ambi Charging Handle AR15
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 224 Valkrie/22 Nosler/6.8SPC
Weight 9.1

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