The links below are provided for your convenience and are sorted by general category. If there are other links you would like us to add, just let us know.
The total number of gun manufacturers in the USA is more than 3 times the number listed above not counting individual gunsmiths. The above list are, in general, the largest & best known.
When purchasing gun items online, the "serialized" portion of the weapon must be shipped to a nearby registered FFL dealer for you to pick up and complete the paperwork. Dealers normally charge $25-$30 for the service.
Gun parts, not serialized, may be shipped directly to you.