Building an AR in a larger caliber like .308 Win doesn't mean you have to sacrifice portability. The BANSHEE Mk3 upper group chamber in .308 Win is just the thing to complete the go anywhere .308 AR10. The CMMG Mk3 platform is based on the popular DPMS Gen 1 high-pattern LR308 design.CMMG delivers its lightest and most compact firearms within the Banshee line of Short Barreled Rifles (SBR's) and AR pistols. Don't let these little guys fool you though - there's plenty of firepower in the Banshee 100's. This upper receiver features a forged 7075-T6-AL M4 upper receiver assembly with a bolt carrier group, and a Cerakoted receiver and handguard. The Banshee is the right combination for you when concealment and portability matter the most.FeaturesForged 7075-T6 AL M4 type upper receiverCerakoted Receiver and Hand GuardComplete Bolt Carrier Group IncludedCMMG Zeroed Ambi Charging HandleZEROED Polymer Dust Cover .308ZEROED Linear Compensator .308 Win