Amend2 Magazine, 223 Remington/556NATO, 30 Rounds, Fits AR Rifles, Polymer Construction, Translucent Smoke 556MODCSMK30 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.