Blackhawk TecGrip Concealment Holster 03 Black Nylon IWB Sig P320/M17, Glock 17/22, Glock 21, S&W M&P 9/40, Colt Govt 5" 1911, Sig P226, Beretta M9 Ambidextrous Hand Moldable The TecGrip Formlok Moldable IWB Holster is constructed with moldable Memory-Lok technology allowing the user to mold the holster around their specific handgun and achieve passive (friction) retention. The tacky exterior material clings to body and fabric, providing no-clip inside the waistband carry. It's ambidextrous with a low profile shirt guard optimizing end-user flexibility and comfort. The holster comes with a T-handle molding tool, for use in forming the holster around the gun and a heavy-mil "dunk bag" for use in heating the holster to optimal thermoform temperature range.