GPS Suppressor Cover, 7.5, Tan, Nylon Construction GPS-T800-75T GPS Tactical Suppressor covers reduces the visual mirage caused by heat radiating off a rifle's suppressor during shooting. Available in 6"" 7.5" and 5" 22LR suppressors" these covers are constructed from 1000D Nylon and feature a heat resistant inner fiberglass and silicon lining.