M&P 15-22 Sport .22 Long Rifle 16.5 Inch Barrel Folding MBUS Sights Gray Furniture 25 Round Featuring 10 inch M&P slim handguard with Magpul M-LOK. Includes a 2 inch M-LOK rail panel. Includes front and rear Magpul folding MBUS sights. Includes 6-position telescoping stock. The brand new M P15-22 Sport rifle from Smith and Wesson is the newest addition to the best-selling M P15-22 line of rifles. Built from the ground up with all of the standard operating features of a modern centerfire AR-style rifle, the M P15-22 Sport is chambered in 22LR and features a variety of product enhancements. These enhancements include the 10-inch M P Slim Handguard with Magpul M-LOK, Magpul MBUS sights (front and rear), a 6-position telescoping stock, and a 2-inch M-LOK Rail Panel. The new M-LOK enhancements to the M P15-22 Sport allows for a wide range of customization options for a variety of optics and accessories.