Rugged Suppressorss Rugged Universal Mount R.U.M Black. U.M - Designed with versatility in mind the 1.37524 SS Rugged Universal Mount or R.U.M. is made from Stainless Steel. The R.U.M. is compatible with Ruggeds Dual Taper Locking System mounts as well as industry-standard mounts. At 3.2 ounces it is one of the lightest universal mounts on the market. Specifications for Rugged Suppressorss Rugged Universal Mount R.U.M: Manufacturer: Rugged Suppressors Fabric/Material: Stainless Steel Color: Bronze Condition: New Package Contents: Rugged Suppressorss Rugged Universal Mount R.U.M