The Smith & Wesson M&P15 is an AR-15 style semi-automatic rifle by Smith & Wesson. Introduced in 2006, the firearm is designed for police use and consumer markets.
Piston-driven M&P15 with standard grip, DPMS stock, and added Magpul hand guard
An AR-15–style rifle is a lightweight semi-automatic rifle based on or similar to the Colt AR-15 design. The Colt model removed the selective fire feature of its predecessor, the original ArmaLite AR-15, itself a scaled-down derivative of the AR-10 design by Eugene Stoner. It is closely related to the military M16 rifle.
Rifles styled like the AR-15 come in many sizes and have many options, depending on the manufacturer. The lower receiver, without the receiver extension, rear takedown pin, and buttstock, is shown at bottom.
A stripped lower receiver, one that is lacking the additional parts included in a completed lower receiver, is the only part of an AR-15–style rifle that needs to be transferred through a federally licensed firearms dealer under United States federal law.
American Tactical OMNI AR-15–style rifle (lower in polymer), 5.56×45mm NATO caliber, with Millett DMS-1 scope and FAB Defense stock and grips