MP15 Rifles are the ideal modern sporting rifle. Built to perform multiple uses under various conditions MP15 Rifles are as versatile as they are reliable. Engineered for a wide variety of recreational sport shooting and professional applications MP15 Rifles are easy to accessorize but hard to put down. MP15 Rifles are lightweight and rugged embodying the best combination of function and form. - 13 MP Slim Modular Free-Float Rail System with Magpul M-LOK Capability - 2 M-LOK Picatinny-Style Rail Panel Included - Magpul MBUS Sights - Patented SW Flash Suppressor - Lightweight Contoured Barrel - Forged Integral Trigger Guard - Armornite Finish on Barrel -Interior and Exterior - Caliber 5.56mm NATO.223 - Capacity 30 - Safety Manual Safety on Lower - Barrel Length 16 - Overall Length 36.6 - Front Sight Folding Magpul MBUS - Rear Sight Folding Magpul MBUS - Action Gas Operated Semi-Auto - Stock 6-Position CAR - Grip Synthetic - Weight 107.3 oz 3041.9g - Barrel Material 4140 - Barrel Twist 1 in 8 5R