The Carlson Remington O Ring Pack 12ga. & 20ga. Graphite Coated for Long Lasting Performance in your Autoloader delivers durable o-rings designed to seal and protect gas-operated shotguns across a wide range of models, including Remington Model 1100 and 11-87 Pro Bore Guns G-3, Beretta, Winchester, Franchi, Charles Daly, Tri Star, and EAA shotguns, as well as many other shotguns that use a gas o-ring. Built in the United States with a graphite coating for enhanced longevity, these o-rings help maintain reliable gas system performance and consistent cycling under demanding field and range conditions, whether youre hunting, competing, or simply enjoying shotgun maintenance and upgrades. Ideal for 12ga and 20ga configurations (also suitable for 28ga), this pack provides the essential sealing components you need to preserve accuracy, reduce gas leakage, and extend the service life of autoloaders by protecting critical connections between the receiver, fore-end, and gas system. Carlsons trusted engineering ensures a precise fit for compatible platforms, delivering peace of mind when resealing and rebuilding gas-operated shotguns. This item is a reliable choice for shooters seeking robust cartridge compatibility and long-term performance from their firearm maintenance kit.