Ruger 8351: Each Ruger American Rimfire rifle includes two interchangeable stock modules that provide comb height options for scope or iron sight use. The lightweight black composite stock has sling swivel studs and is designed for quick and easy handling with a 13.75\" length of pull. The Marksman adjustable trigger offers a user adjustable pull weight, between 3 and 5 pounds. The hammer-forged barrel has a stainless steel finish. It has a 10/22 style extended magazine release for smooth magazine removal, and a installed one-piece aluminum scope rail.