The Magpul PMAG Ranger Plate is a floorplate replacement for all 7.62×51 PMAG LR/SR GEN M3 magazines that incorporates an integral loop similar to the original Magpul USGI Ranger. When installed on the base of the magazine, the PMAG Ranger Plate provides unsurpassed speed and control during high stress, tactical magazine changes. NOTE: This Ranger Plate is a dedicated fit for all 7.62×51 LR/SR GEN M3 PMAGS. Will NOT fit the older PMAG 20LR magazine, any 5.56×45 or 7.62×39 PMAGS, or any metal magazine..