Glock Inc. introduced a pair of "next gen" pistols at SHOT Show 2010 in Las Vegas — the G17 (9mm) and G22 (.40 caliber) — that add grip options for smaller hands, a dual-action spring to smooth recoil and other features.
As previously reported by POLICE Magazine, the Gen4 Glock pistols also bring a rough-textured grip that's less aggressive than the Glock G22 RTF22 and a reversible magazine release. Glock shifted to more traditional vertical slide serrations from the previous crescent serrations.