This is a Maglink Magazine Coupler for Magpul PMAG AR-15 magazines
Double the firepower of your PMAG magazines with this dedicated Maglink Coupler from Magpul.
Weighing in at just under three ounces, this coupler specifically to fit the shape and contours of your PMAG—locking into place on the PMAG’s outer ribbing. Two-piece locking bolt design guarantees this coupler isn’t going anywhere.
Maglink Couplers are designed for 30- and 40-round Gen M2/Gen M3/MOE AR-15 magazines. Will NOT work with first-generation PMAGs (with black follower), 10 or 20-round PMAGs, or metal magazines.
NOTE: The MagLink Coupler is NOT compatible with Gen 1 Pmags, 20-Round Pmags, Emags, Pmag 30G’s, or Pmag 20LR magazines.