Ultimate Arms Gear F4 Tactical Mount Pepper Spray Gel with 2oz Inert Liquid Spray Training Unit Fits Mounted Shotguns, AR, or AK (anything with a rail). Large Thumbscrews for Easy Attachment. Physical and Visual Safety. Largest Cannister of Gel made 3oz of MILITARY grade OC spray. Good for up to 30 shots, Shoots up to 20 feet! Made In USA, Legal in all 50 states.