Now available at RSR Group: Smith & Wesson M&P upper assemblies. These assemblies are made from 7075 T6 aluminum, and manufactured on the M&P15 sporting rifle platform. Chambered for 5.56 NATO, M&P upper assemblies feature folding Magpul front and rear MBUS sights. They’re available in chrome lined or Melonite barrel finishes. You’ll find these in the online catalog section of the RSR Group Web site.