Tactical Aluminum Foregrip with StorageFeatures:- O-ring sealed waterproof compartment - Ambidextrous with vertical and horizontal ribs for secure grip with or without gloves - Built with a flat side for mounting a pressure switch - Ultra lightweightSpecifications:- Mounts to any Picatinny or Weaver rail- O-ring sealed waterproof compartment- Ambidextrous with vertical and horizontal ribs for secure grip with or without gloves- Built with a flat side for mounting a pressure switch- Ultra lightweight: 5oz