March 9, 2026, 11:57 p.m. - Rifles -

Item Description

Just in we have this beautiful CMMG Endeavor .308 rifle with factory flash hider and ready for your next "endeavor!" Get it for well under retail…if you can even find it!

If you want to deliver a hard hitting round at long-range and still have a well-balanced rifle when walking through the field, the 20-inch ENDEAVOR® Mk3 in .308 WIN is a prime candidate for the job. Trusted for decades by hunters and marksmen alike, .308 WIN delivers excellent results up close and at extended distances and can pack quite a punch.

Carrying on the AR15’s reputation for modularity, CMMG® builds their larger caliber rifles like .308 WIN & 6.5 Creedmoor on our Mk3 (AR-10) size platform, which 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.

Specifications:

Caliber.308 WINOperating SystemDirect ImpingementBarrel Length20Barrel Twist1:10Barrel ContourMTBarrel Material416SS, SBNBarrel Twist1:10Muzzle DeviceCMMG ZEROED Muzzle BrakeMuzzle Thread5/8 x 24Gas Port LocationRifleGas BlockAdjustable .750"Upper ReceiverBillet 7075 T6 AluminumLower ReceiverMk3 Billet 7075 T6 AluminumHand GuardCMMG EML15 M-LOKFinishCerakoteCharging HandleCMMG ZEROED AmbiPistol GripCMMG ZEROED Pistol GripBuffer TypeRifle, Mk3/A1Receiver ExtensionA1Stock / BraceMagpul MOE Rifle StockTrigger TypeZEROED Drop-InTrigger GuardIntegratedSafety SelectorCMMG ZEROED 60/90 DegreeMagazineMagpul 20rd PMAGWeight8.8 lbsLength41.2"

ZEROED parts and accessories – Quality comes standard

The AR platform is well known for its capability for customization but picking the right parts doesn’t have to be a nightmare of homework. CMMG’s ZEROED parts and accessories are made here in the USA with quality and attention to detail that is second to none and each ENDEAVOR comes equipped with a slew of ZEROED parts standard, including:

ZEROED Drop-In Trigger

ZEROED Pistol Grip

ZEROED 60°/90° Ambi Safety

ZEROED .308 Ambi Charging Handle

ZEROED Ambi Mag Catch

ZEROED Extended Mag Release Button

ZEROED AR10 Bolt Catch

ZEROED Mk3 Polymer Dust Cover

ZEROED Muzzle Brake .308

Lifetime Quality Guarantee

We aim to please, that’s why every CMMG product is backed by their Lifetime Quality Guarantee against material or workmanship defects. Learn More.

Good luck bidding on this quality rifle!