Ar 15 barrel

m4broker.com AR-15 Barrel is fully chambered and ready for installation onto a host upper receiver. The ar-15 barrel features a true 5.56x45mm NATO Chamber for use with both commercial and military surplus ammunition, we offer different length 7.5, 8.3,10.5,11,16 18 and 20 inch ar15 barrel assembly or striped. And the calibers we offer are 556 Nato, 792x39 or ak47 round, 300 blackout ar15 barrels, 545x39 will in stock soon