The Lone Wolf Arms® Slide Completion Kit for Glock® .45 ACP Pistols includes all of the parts to completely assemble a bare .45ACP slide. This kit includes a firing pin safety (M/21, 21F, and 45GAP models 37, 38, and 39), spring load bearing LCI 10/45, firing pin safety spring, firing pin (10/45), extractor depressor plunger spring, channel liner (all models), spacer sleeve, firing pin spring mid-weight, extractor LCI 10mm, firing pin, spring cup-marine, unlined slide cover plate, and extractor depressor plunger 45/10. Does NOT include barrel, recoil spring assembly, or sights.