The M-14 was developed at Springfield Armory in MA before the gov't closed it down. However, a whole lot of them were manufactured by Thompson-Ramo-Woolridge Co., now known simply as TRW, Inc. There may have been other civilian contractors who built them as well, but I don't remember who these might have been. The one the Army issued me was a TRW. A great rifle! Even better than the great M1!!