CMMG Mk4 5.56X45mm NATO Banshee Upper Group Receiver 10.5in Charcoal Green 55B8D53-CG. 5 this is the shortest 5.56mm upper group CMMG offers. Great for anyone looking to build an ultra-compact AR15 thats lightweight and perfectly sized to go...
CMMG Mk4 5.56X45mm NATO Banshee Upper Group Receiver 10.5in Charcoal Green 55B8D53-CG. 5 this is the shortest 5.56mm upper group CMMG offers. Great for anyone looking to build an ultra-compact AR15 thats lightweight and perfectly sized to go...