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; Glock 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 Sauer 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.