This Mossberg pistol grip kit will turn your ordinary 12-gauge shotgun into one that looks tactical while providing a sure grip and more steady aim with its molded finger grooves. This pistol grip fits Mossberg 500 and 590 12-gauge shotguns. The Mossberg 12-gauge pistol grip kit includes a pistol grip, bolt, washers, rear stud, front stud and washer and Allen wrench so you have everything you need for installation.