The RSA provides a forward sling attachment point for the Magpul MS2 or MS3 and other clip-in systems.Made from precision cast black manganese phosphatized steel, the RSA attaches to any MIL-STD-1913 Picatinny/STANAG 4694 rail. The RSA has been proven to withstand stress tests of over 300 pounds yet weighs a mere 1.26 ounces.
