The GLOCK G21 Gen 5 .45 ACP Double-Action Pistol has a 4.61-inch rifled barrel, front slide serrations and a nitride finish. This centerfire pistol also features a flared mag-well, a white dot front sight, a white outline rear sight and an optics rail. It has a polymer stock, interchangeable backstraps for grips and safe-action safeties. GLOCK G21 Gen 5 .45 ACP Double-Action Pistol - Handgun Semiauto Center Fire at Academy Sports
