Product Description
Stern def.Barrel.45acp 16.1".578-28" 1:16 melonite ar-15 FEATURES:Caliber: 45ACPLength: 16.1 InchesThreaded .578-281:16 TWIST4150 Chrome-moly steelMelonite coatingMade in the U.S.A Other Features: Threaded.578-28, 1:16 twist, 4150 chrome-molly steel, melonite coating this must be used with a 11 ounce buffer or heavier when using a carbine spring,.45acp uppers require an enlarged ejection port