Ultimate Arms Gear Magpul MAG350 MAG 350 PRS Silicone Cloth Package Includes: Magpul MAG350 + Ultimate Arms Gear Cleaning Cloth Magpul Industries Is MADE IN THE USA. Ultimate Arms Gear Silicone Cloth is an Essential Part of Every Shooter's Arsenal. Lubricated with Safe, Non-Toxic, Food-Grade Silicone, Our Cloths Wipe Away The Fingerprints and Body Oils that Cause Rust.