If you're the person your friends hand their guns to when something isn't working right, or you've gotten good at trigger jobs, fitting barrels, or Cerakote, you've probably wondered whether you can charge for it. You can. But once it becomes a business, federal law treats you as a firearms dealer, and you need a Federal Firearms License (FFL).
Here's how a "gunsmithing license" actually works, where the line between hobby and business sits, and which FFL fits the work you want to do.
Do You Need a License to Be a Gunsmith? (The Short Answer)
Yes, if you're doing it as a business. But there's no separate federal "gunsmithing license." Gunsmithing is covered by the same FFL that gun dealers use.
Under the Gun Control Act, the term "dealer" includes "any person engaged in the business of repairing firearms or of making or fitting special barrels, stocks, or trigger mechanisms to firearms" (18 U.S.C. 921(a)(11)(B)). And federal law says no one may engage in the business of dealing in firearms until they've applied for and received a license from ATF (18 U.S.C. 923(a)).
So if you're in the business of working on other people's guns, you need an FFL. For most gunsmiths, that's a Type 01 (Dealer in Firearms, which ATF notes includes gunsmiths). If you're not sure which license fits your plans, start with my guide to FFL license types.
What Counts as “Gunsmithing” Under Federal Law
Gunsmithing covers more than most people think. ATF has addressed this directly. Asked whether a license is needed to engage in the business of engraving, customizing, refinishing, or repairing firearms, ATF's answer is: "Yes. A person conducting such activities as a business is considered to be a gunsmith within the definition of a dealer."
That includes work like:
- Repairs, including replacing worn or broken parts
- Trigger work and fitting trigger mechanisms
- Fitting barrels and stocks
- Customizing
- Refinishing, including coatings like Cerakote
- Engraving
ATF's regulation also lists placing marks of identification on privately made firearms as gunsmith work (27 CFR 478.11).
The key word is firearms. Under federal law, "firearm" includes a complete gun, its frame or receiver, and any firearm silencer (18 U.S.C. 921(a)(3)). Once a customer's gun or receiver is on your bench, you're working on a firearm.
Hobby vs. Business: When You Can Work on Guns Without an FFL
The license requirement is about being "engaged in the business." For gunsmiths, the statute defines that as someone who "devotes time, attention, and labor to engaging in such activity as a regular course of trade or business with the principal objective of livelihood and profit" (18 U.S.C. 921(a)(21)(D)).
The same section carves out "a person who makes occasional repairs of firearms, or who occasionally fits special barrels, stocks, or trigger mechanisms to firearms."
In practice, that breaks down like this:
- Working on your own guns isn't a business, so it doesn't require an FFL.
- Occasionally helping a friend with a repair or a barrel swap generally fits the "occasional" exception.
- Advertising your services, taking regular customer work, and treating it as income looks like a business. Plan on needing an FFL.
There's no bright-line number of jobs that makes you a business. If your goal is to make money working on guns, get licensed before you start.
Type 01 vs. Type 07: Gunsmithing or Manufacturing?
This is where many would-be gunsmiths get tripped up. ATF's National Firearms Act Handbook explains that "there is no distinction between the activities of a gunsmith and a manufacturer in terms of the physical things done to a firearm. What distinguishes gunsmithing from manufacturing is the purpose for which the work is done."
- Gunsmithing (Type 01): You work on a customer's gun for that customer's personal use, and you give it back to them.
- Manufacturing (Type 07): You work on guns as a step in preparing them for sale.
Here's a simple example. Cerakoting a customer's rifle and handing it back is gunsmithing. Buying used rifles, Cerakoting them, and selling them is manufacturing, and ATF says it requires a manufacturer's license.
ATF's current regulation says that, for firearms intended for sale or distribution, a gunsmith does not include "a person who manufactures firearms (i.e., frames or receivers or complete weapons) by completion, assembly, or applying coatings, or otherwise making them suitable for use, requiring a license as a manufacturer" (27 CFR 478.11). That language came from ATF's 2022 frame or receiver rule (Final Rule 2021R-05F). ATF's Q&A on that rule says you need a manufacturer's license if you buy used guns, Cerakote them, and sell them, and ATF explained in the rule that the same goes for applying coatings to guns that are headed for sale, even when another licensee is the one selling them.
The good news is that a manufacturer's license also lets you work as a gunsmith, according to ATF's handbook. If you want to build or refinish guns to sell, look at the Type 07 FFL. Two ATF rulings help show where this line falls: ATF Ruling 2015-1 (letting customers use your equipment to make firearms counts as manufacturing) and ATF Ruling 2010-10 (a dealer-gunsmith doing work for licensed manufacturers), though the 2022 rule superseded 2010-10.
Working on NFA Firearms: When a Gunsmith Also Needs an SOT
Suppressors, short-barreled rifles (SBRs), short-barreled shotguns (SBSs), any other weapons (AOWs), machine guns, and destructive devices are regulated under the National Firearms Act (NFA), which adds another layer.
- Repai