Coupler for PMAG 30 & PMAG 30 M3 magazines which allows user to attach 2 mags together for more efficient speed reloads, and to keep an additional 30 rounds of ammo accessible on the weapon at all times •Features a 2-piece bolt on design & durable, lightweight reinforced polymer construction SPECIFICATIONS Fits second generation PMAG 30 AR/M4 GEN M2 MOE and GEN M3* The MagLink allows use with the 30 and 40 round PMAGS Allows efficient speed reloads while keeping more ammunition at hand and ready to use