Glfa Barrel Ar15 .450 B-Master 18 in 1:24 in Twist Black Nitride 4504140

FEATURES:
-Caliber: .450 Bushmaster
-Length:18 inches
-Rate of Twist: 1:24"
-Finish: Black Matte
-Fluted: No
-Quench-Polish-Quench Finish
-Milspec CrMOv Steel
-M4 Feed Ramp
.750 Gas Block
-11/16x24 Threads