Blowback-operated sub-caliber conversion unit lets you shoot less expensive.22 LR ammunition in any mil-spec 1911 Government model, so you can afford to practice more. Preserves pistol’s weight, balance, and overall feel to help you develop specific skills and “muscle memory” to shoot better with full-power ammo. Simply remove the factory slide and barrel, replace them with the conversion unit, and load up the included .22 magazine with premium-grade high-velocity ammunition. Manufactured to the same rigorous quality standards as Kimber’s full-power 1911 pistols; slide is precision machined from aluminum billet, with wide front and rear cocking serrations and Kimber’s tough, scratch-resistant, KimPro II™ finish. Comes with plain black target sights installed; rear sight is click adjustable for windage and elevation, with flat, finely serrated rear face and a square notch. Includes ramped, match-grade 5" barrel with a 1:16" left-hand twist and stainless steel match-grade bushing. Reinforced polymer 10-round magazine is designed for a secure fit in a standard .45 ACP mag well, and has an anti-tilt polymer follower to ensure smooth feeding of rounds. Slide does not lock open after last shot; pistol may be dry fired with kit installed.