ANDERSON AR15 16in 5.56mm 1:7 Government Profile Barrel (B2-K004-A006)

16" M4 Contour Barrel1:8 TwistChambered in 5.56/.223Threaded BarrelM4 Feed RampsCarbine Gas SystemParkerized Finish

16" Heavy Barrel1-10 TwistChambered in 7.62 x 39Carbine Gas SystemParkerized Finish

Spikes AR15 Barrel

Mil-Spec M4 Barrel Extension with 5.3.1.2 MIL-STD-171 Phosphate Finish1.2.2.2 MIL-STD-171 Hard Chrome Chamber1.2.2.2 MIL-STD-171 Hard Chrome BoreAll Chambers are Individually Checked for Head Spacing...

16" in Length with a 1:7 TwistCarbine Length Gas System4151 Chrome Moly Vanadium ConstructionNitride Finish The ANDERSON .300 Blackout 16in Carbine Length M4 Barrel (B2-K004-C006-0P) is 16" in...