"Police officials said that two suspects, Syed Farook and Tashfeen Malik, were armed with two semiautomatic rifles and two semiautomatic handguns. The semiautomatic rifles were a .223-caliber DPMS Model A15 and a Smith & Wesson M&P15. One of the handguns was manufactured by Llama, and the other by Smith & Wesson."
January 1, 1970
https://en.wikiquote.org/wiki/Smith_%26_Wesson_M%26P15