![PROMAG MAG GLOCK 17 19 26 9MM 10RD STEEL INSERT PROMAG MAG GLOCK 17 19 26 9MM 10RD STEEL INSERT](https://cdn11.bigcommerce.com/s-c6aiidxwtg/images/stencil/300x300/products/33544/41382/BHPMGLK14__44680.1738866428.jpg?c=1)
This U.S.A made magazine is constructed of a proprietary Dupont� Zytel � derived high impact polymer with a full length steel internal insert stamped and welded just like the factory mag then over molded with our proprietary high impact Nylon based polymer.