Here is what one polymer company says about their injection molded firearms polymer products.
"Custom glass-fiber-filled plastic material blended by Polymer and selected for low weight, chemical resistance, stiffness, low and high temperature performance, and weatherability. TPE overmold and recoil pad material. Special grade of 50% glass filled nylon for forearm insert."
"Custom glass-fiber-filled plastic material blended by Polymer and selected for low weight, chemical resistance, stiffness, low and high temperature performance, and weatherability. TPE overmold and recoil pad material. Special grade of 50% glass filled nylon for forearm insert."
