New MD Arms SAIGA 12 Guage 20rd Drum Magazines. The MD-20, Saiga-12 drum mag is made of only the best materials available. It loads 2 3/4inch shells and has a simple design with very few moving parts for the utmost in reliability, durability, and ease of maintenance. Made entirely in the USA! The MD-20 can be stored loaded! Includes Clear Smoke and Black back covers.