Light-weight, rugged injection molded polymer frame w/ aluminum alloy slide; Completely licensed by GLOCK w/ complete rollmarks about the slide and logos molded on the frame Like all other Umarex (Elite Force) Glock fuel blowback airsoft pistols, this Glock 18C incorporates a entire metal slide that cycles on each shot, https://lindseyz604vhs2.liberty-blog.com/27346256/5-easy-facts-about-glock-18c-parts-kit-described