The Amend2 Mod-C 30-round magazine is made from an updated translucent polycarbonate material that provides increased heat and chemical resistance over existing compounds on the market. It features their tried and true 4-way anti-tilt, self-lubricating follower and a heavy duty, non-corrosive, non-memory spring. Of course, like all Amend2 products, it is designed and manufactured in the USA with American parts and craftmanship. RSR -