This is a Ruger factory replacement barrel. Factory replacement parts are manufactured to the exact same specifications and tolerances and use the same manufacturing materials as the original parts. It is chambered in 22LR with a 1:16" RH twist. Barrel is a bull barrel contour with a .920" barrel diameter. Precision-rifled, cold hammer-forged stainless-steel barrel features a 1/2"-28 threaded muzzle. Barrel is fitted with a thread protector. Satin stainless finish with black Cerakote flute accents. This barrel fits any standard 10/22 rifle receiver with a standard barrel hole. Barrel weighs 2 lbs., 2 oz.. Note: Does not fit rifles equipped with carbine stocks