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).Type: Stock AdapterModel: Pistol Grip Stock AdapterFinish: Non-SlipMaterial: PolymerColor: Black