Smith & Wesson increased scrutiny due to the frequent use of its firearms in mass shootings such as the 2018 Stoneman Douglas High School shooting, in which 19-year-old Nikolas Jacob Cruz used a Smith & Wesson AR-15 style rifle, the semi-automatic M&P15. The same weapon was used in the 2015 San Bernardino attack and the 2012 Aurora shooting. Smith & Wesson has produced revolvers over the years in several standard frame sizes. "M" refers to the small early Ladysmith frame, "I" to the small .32 frame, "J" to the small .38 frame, "K" to the medium .38 frame, "L" to medium large, and
Smith & Wesson Model No. 2 Army with Remington Arms, Smith & Wesson allowed Remington to convert Remington Model 1858 Percussion Cap revolvers into metallic cartridge .46 rimfire conversions using the Rollin White patent, against payment of a royalty fee. In 1869 the company developed a large frame break action single action revolver with an automatic empty case ejector, first produced 1870, in the calibers .44 S&W American and .44 Henry. The design is known as the Smith & Wesson Model 3. Smith & Wesson Model No. 2 Army The Smith & Wesson Model No. 2 Army a.k.a. "Model No. 2 Old Model Smith & Wesson Revolver"