ProMag Industries Magazine, 12 Gauge 10 Rounds, Fits Saiga, For 2-3/4 Shells, Polymer, Black SAI 02 ProMag magazines are made in the USA and backed by a lifetime guarantee against manufacturer's defects. Magazine springs are precision wound using heat-treated chrome silicon wire and each and every step of the assembly process is checked and double checked in order to maintain the same consistent level of quality.