Diamondback Barrels, 223 Remington/556NATO, 10", 1:8 Twist, Black Nitride Finish, Carbine Length Gas System, Threaded 1/2-28" 556C10M50B8R Available to order on-line. Ships in 5-14 days $76.88
Diamondback Barrel, 300 Blackout, 10", 1:8 Twist, Black Nitride Finish, Pistol Length Gas System, Threaded 5/8-24" 300P10H50B8R Available to order on-line. Ships in 5-14 days $75.64