The Keystone 722 PT .22 LR Bolt-Action Rifle comes equipped with an aluminum chassis and a synthetic A-B Arms Mod X stock. It's also crafted with an aluminum-alloy barrel, and its metal parts feature a hardcoat anodized finish. The firearm accommodates accessories via the 1/2 x 5/8 threading on the muzzle and an optic-ready design. Keystone 722 PT .22 LR Bolt-Action Rifle Purple/Yellow - Rifles Rimfire at Academy Sports