High Quality Content by WIKIPEDIA articles! John Douglas Pedersen (May 21, 1881 – May 23, 1951) was a prolific arms designer who worked for Remington Arms, and later for the United States Government. Famed gun designer John Moses Browning told Maj. Gen. Julian S. Hatcher of U.S. Army Ordnance that Pedersen "was the greatest gun designer in the world".