Taran Tactical Innovations Carry Magazine Well for Gen 4 Glock models 17 34 17L 22 35 24 31 Will not fit properly on stippled frames. The magwell will not seat properly if the firearm is stippled all the way to the bottom of the grip. Will not work with any back-strap Will not fit on Polymer 80 frames May require slight fitting on stippled Glocks Will not fit .45 caliber Glocks Designed with concealed carry and duty use in mind, the Taran Tactical Innovations Carry Magazine Well for Gen 4 Full Sized Glocks in 9mm, 40 S&W and 357 Sig provides the ultimate in reloading performance for Glock pistols. CNC'd from high quality billet aluminum right Mfg: Taran Tactical Innovations