Tacticool22 has been offering their barrel nut adapters that allow you to mount an AR-15 rail on the S&W M&P 15-22 for a long time. Now they have gone a step further and are offering a complete handguard designed to install on the M&P 15-22.
Their 10″ Free Float Handguard with Picatinny Rail for S&W M&P15-22 comes with all the parts you need to mount it on a your rifle (tools sold separately). The handguard features aluminum construction, M-LOK slots on the 3, 6, and 9 o’clock sides, and a short section of rail on the top for mounting sights. At 10″ long, it is the same length as the factory rails found on most M&P 15-22 variants.