Troy Industries, Inc. is an American manufacturer of firearms and firearm parts based in Clarksville, Tennessee. It is the manufacturer of parts on the Smith & Wesson M&P-15 and is a United States government contractor.
Troy is best known for its rugged, folding battle sights in common use by Colt, Smith & Wesson, and many other large OEM gun manufacturers. Additionally, Troy Industries is known for its M14 rifle parts and its M7A1 carbine, which was reviewed by the United States armed forces when drafting requirements for a replacement of the M4 carbine.