This drum magazine is made to fit all of your standard AR12 style shotguns from major importers like Panzer Arms and SDS. This drum holds twenty 12 gauge 2 3/4" shotshells. This durable drum is made from high-quality polymer and steel and all of the metal internals and springs have been properly heat treated. This drum is made by DefencePort in Konya Turkey and they have knocked it out of the park with their patented easy loading handwheel which makes it easier for shooters to load it comfortably. Most of the AR-style shotguns on the market today are imported from Turkey so it only makes sense that the best drum to complement these rifles with would come from there as well. The built-in loading wheel on the front of the drum not only works great but gives the drum a cool futuristic look to boot