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 3 gunsmiths to reverse-engineer the Smith & Wesson design, and then began to produce copies of the revolver—both in their own arsenal at Tula and by contracting other manufacturers in Germany and elsewhere in Europe to manufacture copies of the revolver (a common practice at the time—Webley & Scott's British Bulldog revolver was widely copied, too, by European and American gunsmiths). The Russian and European copies of the S&W Model 3 revolver were generally of very high quality, but considerably cheaper than the S&W produced revolvers. This led to the Imperial government cancelling the order for significant quantities of Smith &