This Auto Catcher from Carlson's is an all-steel shotgun shell catcher that prevents empty hulls from being ejected through the receiver opening on semi-automatic shotguns and holds the empty hulls for easy removal. This model works with all 12-gauge semi-auto shotguns. Keep empties from hitting the ground and from distracting you or others at the range. Simply peel off the double-faced tape (2 included with the auto catcher) and attach to the gun's receiver. The semi-permanent adhesive can be removed if desired. Softly padded tape acts like a barrier, keeping the metal plate away from the gun. There is no movement or vibration to scratch the receiver's finish. The Auto Catcher can be adjusted to fit different shotshell loads and guns where needed. Simply close or open the ends of the wire with no modifications to the gun.Features:12 gaugeRight hand OnlyDouble Sided Tape AttachmentCan be flipped to not catch shells