Our Superior quality AK 7.62x39 mm foldable stock is constructed of a high density polymer that offers high strength, and a lifetime of excellent service. Our AK stock features foldable stock that can be installed on stamped receivers & all commercial-series buffer tubes. It includes a reinforced knuckle with steel hinge pin equipped with a sling hook attachment on the rear of the butt stock to attach a sling. It Will not fit on variants with a milled receiver, a bottom tang, a slant-cut receiver at the rear, or an under folder stock. No gunsmithing is required.