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Mfg Item #: MGA46050
AR stock adapter for M249, M249S, MK46, MK48. This stock adapter allows you to use a standard AR stock, military or commercial tube, with your belt-fed! This adapter requires an internal buffer system; either a Minimi spring system, or MGA polymer buffer system.
NOTE: The two addtional photos are of the MGA polymer buffer system and the Minimi spring system.The adapter is compatable with Magpul QD cups.