This FAB Defense modular M4-Style Collapsible buttstock and pistol grip system is for your Remington 870 12 Gauge shotgun. Its rugged one piece adapter design features drop-in installation and is textured for secure grip. The pistol grip features a storage compartment to hold extra batteries. FeaturesRock Solid One Piece Ergonomic DesignSpecial Non Slip Texture, Made from Reinforced Composite MaterialsEnhanes Natural Fighting Stance Hold on Your ShotgunSlightly Angled to Counter RecoilImproved Performance in Reaction, on Target Time and Muzzle Control when firingNo Gunsmithing RequiredProvides Storage Compartment for Batteries or Cleaning Kit