"M&P" stands for "Military & Police" and is used to pay homage to the Smith & Wesson .38 Military & Police revolver. According to the company, the .38 Military & Police, now known as the
Model 10 revolver, has been in continuous production since 1899, and over six million units have been produced." The M&P15 was introduced at the 2006
SHOT Show in two varieties: the M&P15 and the M&P15T. Currently, Smith & Wesson makes the lower receiver in-house, while the barrel is supplied by
Thompson/Center Arms, an S&W company acquired in 2007. Smith & Wesson's total rifle production has increased through the years since it entered the rifle market. In the past, the company had marketed rifles and shotguns made by other manufacturers, but had not manufactured a long gun in house since World War II when it fulfilled a British military contract. Smith & Wesson re-entered the US long gun market because it was estimated to be 80% larger than the handgun market. In May 2008, Smith & Wesson introduced their first
AR-15 style rifle in a new caliber, the model
M&P15R, a standard AR platform rifle chambered for the Russian
5.45×39mm cartridge. It had a 16-inch barrel, 6-position collapsible stock and a stainless-steel 30-round magazine. However, few shooters wanted an expensive AR-15 clone in a non-standard caliber that needed special magazines. ==Design==