DEMO Jacob Grey Firearms Threaded Rifle Heavy Barrel AR Platform AR-15 7.62x39 10.5in Carbine Length 1-10 Twist 5/8x24 Thread Black

DEMO Jacob Grey Firearms Threaded Rifle Heavy Barrel AR Platform AR-15 7.62x39 10.5in Carbine Length 1-10 Twist 5/8x24 Thread Black. 6239 barrel has a carbine length gas system with a 1:10 twist rate. Our 7.6239 parkerized rifle barrels are made from the finest 4150 Chrome Moly Vanadium and precisely rifled for high accuracy. They are then hardened and stress relieved to withstand the effect an AK round can give a barrel. Use a Jacob Grey AR barrel in your next AR15 build and experience superior