Stealth Twin Mag holster provides all-day comfort, as well as security for your double stack magazines. The Twin Mag is constructed of injection molded nylon shell and rust-resistant black oxide fasteners. An adjustable compression screw grants an extremely wide range of fit for double stack magazines, while the Frame-Lock technology grants positive retention during even the most rugged use. It fits double stack magazines for most Glock 19/22/26/43; Ruger LC9S; Springfield XD-S; Taurus PT111 G2.