The Comp-Tac AR 556/223 PLM Magazine Pouches are made of Kydex for the smoothest, fastest draw. Perfect for 3 Gun Competitors or any shooter who would like to carry an additional magazine while at the range. The Push-Button Locking Mount (PLM) attaches to belts with a simple push of a button. When attached the button slides horizontally to lock the mechanism. With 9 mounting holes this magazine pouch has 270 cant adjustment. NOTE: These magazine pouches are reversible allowing the customer to carry their magazine with the bullets facing forward or rearward. If you order a RSC (Left-handed Shooter) the retention screw will be toward the rear of the body when carried on the user's right side.