Coming in at 24 inches this ENDEAVOR® Mk3 has the longest barrel CMMG® offers in .308 WIN. Pair it with your preferred optic of choice and you’ve got a fantastic long-range rifle. Material selection is key to a quality rifle which is why the barrel on this .308 ENDEAVOR is made from 416 stainless steel with a nitride finish for durability and corrosion resistance without sacrificing performance. - Built on our Mk3 (AR-10 size) platform to safely handle larger calibers like .308 WIN the Mk3 is based on the LR-308/DPMS Gen 1 high-pattern design. - Each CMMG ENDEAVOR rifle is purpose-built for long-range performance with everything from the Magpul® MOE® rifle stock to the ZEROED muzzle brake and every part in between selected for its utility to the avid marksman. - The EML 15 handguard maximizes customization potential. M-LOK® attachment slots at the 12 3 6 and 9 o’clock positions give you plenty of real estate to mount accessories while the Picatinny rail sections allow for easy and solid mounting points for sights and accessories. - Platform Mk3 - Caliber .308 WIN - Operating System Direct Impingement - Barrel Length 24 - Barrel Twist 1:10 - Barrel Contour HT - Barrel Material 416SS SBN - Barrel Twist 1:10 - Muzzle Device CMMG ZEROED Muzzle Brake - Muzzle Thread 5/8 x 24 - Gas Port Location Rifle - Gas Block 0.936 Non-Adjustable - Upper Receiver Billet 7075 T6 Aluminum - Lower Receiver Mk3 Billet 7075 T6 Aluminum - Hand Guard CMMG EML15 M-LOK - Finish Cerakote - Charging Handle CMMG ZEROED Ambi - Pistol Grip CMMG ZEROED Pistol Grip - Buffer Type Rifle Mk3/A1 - Receiver Extension A1 - Stock / Brace Magpul MOE Rifle Stock - Trigger Type ZEROED Drop-In - Trigger Guard Integrated - Safety Selector CMMG ZEROED 60/90 Degree - Magazine Magpul 20rd PMAG - Weight 10.1 lbs - Length 45.2