High-capacity drum magazines are great for three-gun competition-fewer mag changes mean faster times and better scores. Made from hard-wearing, injection-molded polymer for reliable service. Access cover keeps out dirt, dust, and debris, yet can be removed for cleaning or maintenance. Due to varying tolerances on Saiga shotguns, minor fitting may be required; fitting instructions included. 20-Rd model features a thumb activated slide assist to retain the spring to help you load rounds quickly. 12-Rd features a translucent cover to see how many rounds remain. Mfg: Pro Mag SPECS: Polymer, black/translucent. Fits Saiga 12 gauge shotguns only. Accepts 2A 3/4" shells only. Instructions included. 20-Rd - 7" (17.8cm) dia., 3" (7.6cm) thick. 2 lbs., 4 oz. (1 kg) wt. 12-Rd - 5" (12.7cm) dia., 3" thick. 1 lb., 3 oz. (538 g) wt.