Building an AR in a larger caliber like .308 Win doesn't mean you have to sacrifice portability. The BANSHEE(TM) Mk3 upper group chamber in .308 Win is just the thing to complete the go anywhere .308 AR10. The CMMGMk3 platform is based on the popular DPMS Gen 1 high-pattern LR308 design. Check out our CMMG Resources article to learn more about the Mk3 platform. Available in different Cerakote finishes, all CMMGUpper Groups come complete with bolt carrier group and ZEROED(TM) accessories including:ZEROED Polymer Dust Cover .308ZEROED AR10/Mk3 Ambi Charging HandleZEROED Linear Compensator .308 WinLifetime Quality GuaranteeWe aim to please, that's why every CMMG product is backed by our Lifetime Quality Guarantee against material and workmanship defects. Learn More.