CMMG Mk4 .300BLK Banshee Upper Group Receiver 12.5in Sniper Grey 30B8A6F-SG. With the 12.5 BANSHEE upper group you can build your next 300BLK AR with character like no other. Specifications for CMMG Mk4 .300BLK 12.5in Banshee Upper Group Receiver:...

In stock
ShipAmount $0.00
RevType 2
Manufacturer CMMG
Sku 30B8A6FSG
Identity 21836663148