Ultimate Arms Gear AR Mag Cover Socs for 30-40rd Polymer & PMAG Mags, USA United States U.S. American Flag Nice Boots Made from High Grade Neoprene Rubber and Wrap Tightly Around your Mag. Improve Grip. In low light scenarios if you drop a mag, without looking, you will know which end goes in the rifle. Mag Not Included. Fits Polymer 30-40rd Mags including PMAG. USA MADE