Barrels & Choke Tubes: Replacement barrels and choke tubes. Magazines & Mag Tubes: Shotgun magazine tube extensions, mags, and clips. Scope Mounts: Mounts for scopes and red dot/holographic dot/tritium dot sights. Recoil pads: Pre-fit and slip-on recoil pads Sights: Iron sights, tritium night sights Stocks: Full length stocks, pistol grips, and forearms. Tac-Lights & Lasers: Tactical lights, attachments, and laser aiming devices.