US Armament is the parent company to Ordnance Research Inc., as well as, Rock Ridge Machine Works, Inc. located in Ephrata, PA. We are a proud US Manufacturer of firearms and firearm accessories including the 1903 Springfield Rifle Series, 1877 "Bulldog" Gatling Gun and Machine Gun Mounting equipment. Future product lines will include the 1903 Colt Hammerless Pistol, and other Colt licensed reproductions.