This Ergonomic pistol grip adapter with finger grooves and textured non-slip grip works with Mossberg 500/590 and Maverick 88 shotguns. The modular grip adapter design that is easy to configure with many options. It 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/right folding stock adapters. (NCStar DLG-080, DLG-094, DLG-076, DLG-127) (all sold separately).