The 1791 Ultra Custom Light Bearing holster with Memory-Lok technology allows for a customized fit with Kydex like retention with the comfort of leather. The Ultra Custom comes with an innovative design that allows you to use rail-mounted accessories like larger lights and lasers. Once you receive it, follow the instructions, and mold the Memory-Lok Leather to a full custom fit for your firearm. You can’t get any more custom than that. Compatible with 1911 Officer with Rail; Beretta APX Carry; FMK Patriot; GLK 17, 19, 19X, 23, 25, 26, 27, 28, 29, 30, 32, 33, 44, 45, 48; FN FNS-9; Keltec PF-9; Kimber R7 Mako; Mossberg MC1; Ruger Max 9, SR9, SR40, SR22; S&W M&P 9/40/40c, Shield, Shield Plus, SD9, SD9VE, 5903, 5904, 5906; SCCY CPX-1, CPX-2, CPX-3; Sig P225, P228, P229, P229c, P365-XMacro; Springfield XD9, XD40, XDS, XDE; Walther P99, P22, PPS, CCP; Taurus PT111, G2, G2c, G3, G3c, 709 Slim; Walther CCP, P22, P99, PPS and similar frames with most rail mounted lights.