The Vism Rem 870 PG Stock Adapter allows you to use AR- style collapsible buttstocks with the optional AR-style stock adaptor attachments. Made of quality reinforced polymer composite, the adapter features QD sling attachments on both sides and a storage compartment with tight-sealing door for batteries and cleaning kits. All mounting hardware is included. The grip adapter works with the optional grip end cap, AR style fixed, and left and right folding stock adapters.