Ultimate Arms Gear Standard Drop In Replacement Blue Alumininum Magazine Mag Release Button For AR-15 AR15 AR 15 M16 M4 Lower Receiver / Rifle
Official Ultimate Arms Gear T6 Aluminum hardcoat anodized drop-in replacement button for standard factory release;Simply unscrew your exisiting button and replace it with this one ( uses your gun's existing factory magazine release spring). Fits all AR15/M16 type lower receivers / rifles. - Blue Color