"The Smith & Wesson M&P 15 Sport III Semi-Auto AR-15 Rifle with Red Dot is ready for action right out of the box. Built for reliability above all, the M&P 15 Sport III is ideal for recreational shooting, competitions, and even duty use. The free-floating M-LOK handguard allows tons of customization options with aftermarket accessories, plus its adjustable stock makes it easy to find the perfect fit. The Crimson Trace CTS-106 Red Dot Optic with 4 MOA dot provides simple targeting. Mid-length gas system. 1:8"" rifled 4140 chrome moly barrel maximizes accuracy with a wide range of ammo. Aluminum upper and lower. 16"" 4140 chrome moly steel barrel with 5R rifling Forged 7075-T6 aluminum upper and lower Free-floating M-LOK handguard Mid-length gas system 6-position adjustable stock Includes Crimson Trace CTS-106 Red Dot Sight"