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The CMMG® Mk3 upper receiver assembly, based on the DPMS LR308 gen1 high-pattern design, gives shooters an AR10-style platform with the widest range of compatible parts and accessories on the market.
Explore CMMG's AR-15 and AR-10 upper receivers. Complete build kits and stripped uppers available. High-quality parts for custom AR builds. Shop now.
Start your AR10 upper build with looks and quality like no other. The CMMG® Mk3 upper receiver assembly, based on the DPMS LR308 gen1 high-pattern design,
308 Uppers from top brands including - CMMG, Guntec, Aero Precision, and More! | Free Shipping Available! — 200 products / 567 models. Complete with a barrel, gas block, and gas tube, the 308 Upper is the perfect starting point for any modification or build out.
The CMMG Mk3 .308WIN 24in Endeavor Upper Group Receiver is based on the DPMS Gen 1 LR308 pattern of rifles. I would recommend contacting Stag Arms directly in order to confirm the lower you have will be compatible with DPMS Gen 1 upper receivers.
The Mk3 T is equipped with CMMG's RKM15 KeyMod free float hand guard. Available with a nitrided 416 stainless steel, 16" medium taper profile barrel in 308 WIN. Each upper group includes CMMG's lifetime quality guarantee.
308 Winchester Upper Receivers are standard issue on AR-10 / LR308 platform rifles. Also known as 7.62x51 NATO, 308 WIN is among the most popular ammunition in the world. Upgrading your AR10 / LR308 to a higher quality 308 WIN upper assembly can yield significant gains in accuracy and effectiveness.
