With two distinct styles of threaded .22LR barrels, each customer can choose a BRO-22 barrel tailored to their needs. Both options are 18 inches in length and made from durable 4150V nitrided steel, featuring a Bentz Chamber and a 1:16 6-groove twist rate, laser-engraved on the barrel for easy identification. Each threaded barrel also comes with a BRO-22 A2 thread protector for added protection and convenience. Please note, these barrels are not compatible with AR-22 platforms.