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.Made in U.S.A.FeaturesFits 5.56x45 PMAG 30 and 40 round AR/M4 GEN M2 MOE and AR/M4 GEN M3 magazines*Impact resistant polymer construction provides light weight and resists operational abuseWide-set, two-piece bolt-on design resists flexingIntegral grooves interface with PMAG ribbing to eliminate slippageWeight: 2.8 oz.