PTAC 16" 1:9 M4 5.56 NATO with 22LR Conversion Kit & Black Dog Magazine

Details PTAC 16" 1:9 5.56 NATO with 22LR Conversion Kit Barrel Length: 16" Caliber: 5.56 NATO Twist: 1 in 9" Profile: M4 Phosphate Finish .750" Gas Block Diameter M4 Feedramps M16 Profile Bolt Carrier Group Charging Handle 22LR Conversion Kit 25-round Black Dog magazine Barrel Length: 16" Caliber: 5.56 NATO Twist: 1 in 9" Profile: M4 Phosphate Finish .750" Gas Block Diameter M4 Feedramps M16 Profile Bolt Carrier Group Charging Handle 22LR Conversion Kit 25-round Black Dog magazine