MagPul MagLink Coupler - PMAG 30/40 AR/M4

The MagLink is a coupler for PMAG 30 and 40 round AR/M4 magazines* which allows the user to attach two magazines together for more efficient speed reloads, and to keep additional ammunition accessible on the weapon at all times. The MagLink features a two-piece bolt-on design and durable, lightweight reinforced polymer construction.