This Finned Ruger 10/22 Barrel fits the Ruger 10/22 rifle. This 16" barrel with sights is chambered in 22LR and features a 1:16 rifling twist to stabilize standard as well as high velocity 22LR ammunition. Diameter is .920" and requires a non-tapered .920" barrel channel in your stock. The barrel comes with a receiver mounted rear peep sight and ringed front sight post. This front sight post is a little high for use with the rear sight that comes on our Tommy Gun Replica kits. If you install this barrel on one of those kits, you may need to shorten the front sight post.Click Here to see all of our Ruger 10/22 Barrels.