Caldwell Tac Ops Universal Nylon Holster has dual gun security features: a semi-rigid snap closure strap with a hook and loop over strap and a small hook and loop horizontal strap for securing to M.O.L.L.E. straps. Semi rigid ballistic nylon construction keeps holster shape even when empty. Extra magazine pouch with hook and loop strap closure. Wide hook and loop strap. Retention strap height is adjustable. Accepts medium framed semi autos and revolvers. Retention strap height is adjustable using the included plastic shim to slide the hook and loop attachment up and down the inside of the pocket.