The M and P 15-22 SPORT features a 10-inch MP slim handguard that incorporates the popular Magpul M-LOK� system. The M-LOK system allows rifle owners to easily customize their M and P 15-22 SPORT by adding accessories without removing the handguard. M and P 15-22 SPORT owners have the option of easily mounting numerous M-LOK-compatible accessories or any number of Picatinny-style rail sections designed to accommodate other accessories. Smith and Wesson includes a 2-inch M-LOK rail panel with each rifle.The M and P 15-22 SPORT comes standard with one of the most popular folding sights systems available for MSRs. The removable Magpul MBUS� front and rear folding sights are lightweight and durable, further enhancing the performance and value of the new M and P 15-22 SPORT.