These are the MD20 drums that fit the Saiga-12 shotgun. They hold 20 rounds. These drums are newly listed on GunBroker and have no reserve. There are 68 of them available. They are starting at a penny! GunBroker.com Auctions by MDARMS.COM If you want a 20 round drum for your Saiga 12, I'd suggest you have a look.