The MC16N .223 Magazine Coupler is designed with small or large removable pouch pulls. The coupler for 30 round AR/M4 magazines with the pouch pull automatically sets the correct height of the magazines without interference on the ejection port. Its robust design has thicker walls for better resistance to avoid breakage. The Magazine Coupler holds aluminum magazines with three adjustment screws for additional strength. - Fits 30 round AR15/M16 magazines - Coupler can be used with optional mag height - Pouch pull is removable � avoids interference with the ejection port - Impact resistant polymer lightweight - Equipped with 3 screw tightening for extra rigidity