For Reliable Operation In Sub-Caliber Conversions

Rugged, high-capacity magazines are designed for 9mm AR-15 conversions like Colt and Rock River Arms that use a Colt or modified UZI magazine. Polymer model has a lightweight, reinforced molded polymer body that resists damage if dropped on a hard surface and has deeply molded grasping ridges to give you a firm hold when inserting the mag into the rifle. Steel model has traditional, all-steel construction, with numbered witness holes that let you make a quick check of remaining round count. Both have an anti-tilt follower to aid in smooth movement of the round stack for reliable feeding. Removable floorplate for easy cleaning. Requires a lower receiver conversion block, available separately.