Crafted from heat treated steel, the TacSol 2211 slide and barrel converts your pistol to .22 LR while maintaining the weight and feel of the 1911 pistol. This means a realistic shooting experience for accurate training and shooting. A seamless fit on your Government or Commander length 1911 will provide all the reliability and accuracy TacSol is known for. Works with any Ed Brown 1911. Only full size magazines are available, so not intended for use with a Compact/Officer’s frame, although it will technically still work if care is taken not to slam the mags into the frame. The conversion includes everything you need. The slide/barrel/spring assembly, threaded barrel with thread protector, Weaver/Picatinny rail for use with red dot optic mounting systems, and a 10 round polymer magazine.