Is It Legal to Build Your Own Gun in Texas? Rules and Serial Numbers

Yes, it is legal to build your own gun in Texas for personal use, with no license required, as long as you are legally allowed to possess a firearm in the first place and the gun you build is not one of the categories that federal law regulates separately. Texas adds no state-level restrictions beyond the federal rules. The rest of the answer is about the limits: who can’t build one, what you can’t build without prior approval, and what changes if you ever decide to sell.

Who Can Legally Build a Gun

The ATF has confirmed that an individual who is not legally barred from possessing firearms may make one for personal use without a Federal Firearms License.1Bureau of Alcohol, Tobacco, Firearms and Explosives. Privately Made Firearms You can assemble a gun from parts, use a kit, or print components with a 3D printer. Texas has no statute prohibiting personal manufacture, so the analysis collapses into a single question: are you allowed to own a gun at all?

Under 18 U.S.C. § 922(g), the following people cannot possess a firearm or ammunition anywhere in the country:2Office of the Law Revision Counsel. 18 USC 922 – Unlawful Acts

  • Anyone convicted of a crime punishable by more than one year in prison
  • Fugitives from justice
  • Anyone who unlawfully uses or is addicted to a controlled substance
  • Anyone formally adjudicated as mentally defective or involuntarily committed
  • Anyone under a qualifying protective order involving an intimate partner or child
  • Anyone convicted of a misdemeanor crime of domestic violence
  • Anyone dishonorably discharged from the military
  • Anyone who has renounced U.S. citizenship
  • Anyone unlawfully in the United States, or admitted on a nonimmigrant visa (with narrow exceptions)

The federal felony ban is permanent. Texas is more lenient on paper: state law prohibits a person convicted of a felony from possessing a firearm only until the fifth anniversary of their release from confinement or community supervision, after which possession is allowed at the person’s home. The stricter federal rule controls, and federal charges can be brought regardless of what Texas allows. A separate Texas provision bars firearm possession for five years after a Class A misdemeanor conviction for family or household member assault, measured from the later of release from confinement or community supervision.3State of Texas. Texas Penal Code 46.04 – Unlawful Possession of Firearm

If any of these categories applies to you, building a gun is manufacturing an item you are already prohibited from possessing. The homemade route does not create an exception.

Weapons You Cannot Build Without ATF Approval

A standard rifle, pistol, or shotgun built for personal use needs no federal registration. Several categories of weapons are different. The National Firearms Act covers:4Office of the Law Revision Counsel. 26 USC 5845 – Definitions

  • Short-barreled rifles (barrel under 16 inches)
  • Short-barreled shotguns (barrel under 18 inches)
  • Machine guns
  • Silencers
  • Destructive devices

To build any of these at home, you file ATF Form 1, submit fingerprints and a photograph, pass a background check, and wait for approval before you begin manufacturing.5Bureau of Alcohol, Tobacco, Firearms and Explosives. Application to Make and Register NFA Firearm – ATF Form 1 As of January 2026, the making tax for items like suppressors and short-barreled rifles is $0, but the registration, fingerprinting, and pre-approval requirements are unchanged. Making an NFA firearm without approval, or possessing an unregistered one, is punishable by up to 10 years in federal prison.6Office of the Law Revision Counsel. 26 USC 5871 – Penalties

This is one of the easiest lines to cross by accident. Attaching a short barrel to a rifle, or adding a stock to a pistol, can create an unregistered NFA weapon without any intent to break the law. Measure carefully and know the thresholds before modifying anything.

The Rule That Catches 3D-Printed Guns

Federal law prohibits manufacturing, possessing, or transferring any firearm that cannot be picked up by a standard walk-through metal detector once the grips, stocks, and magazines are removed. Every major component must also produce an accurate image on airport-style X-ray equipment.2Office of the Law Revision Counsel. 18 USC 922 – Unlawful Acts The statutory benchmark is 3.7 ounces of a specific type of stainless steel, and the Attorney General can adjust that threshold as detection technology changes.

A gun printed entirely in plastic is illegal. If you are printing a frame at home, you need enough metal in the finished firearm — a barrel, slide, or inserted metal plate — to clear the detection floor.

Serial Numbers on a Homemade Gun

A firearm you build for yourself does not need a serial number under federal law. The ATF has stated that you do not have to serialize or register a firearm you make for personal use, as long as you are not in the business of manufacturing for profit.1Bureau of Alcohol, Tobacco, Firearms and Explosives. Privately Made Firearms

Commercial kits and partially finished frames are treated differently. A 2022 ATF rule redefined when an unfinished frame or receiver has progressed far enough to count as a “firearm,” which means kits and partial frames sold by dealers must be serialized and sold through a licensed dealer with a background check.7Bureau of Alcohol, Tobacco, Firearms and Explosives. Summary of Final Rule 2021R-05F The Supreme Court upheld that rule in 2025.8Supreme Court of the United States. Garland v. VanDerStok, No. 23-852 The rule does not force individuals to engrave serial numbers on guns they build at home. If you ever take a homemade gun to a licensed dealer for any reason, though, the dealer must serialize it within seven days of taking possession.

What Changes if You Sell

The moment you build a gun in order to sell it, you need a Federal Firearms License. Selling without one is a federal offense, and the “engaged in the business” standard was broadened by the Bipartisan Safer Communities Act of 2022 to capture anyone who repetitively buys or sells firearms predominantly to earn a profit.9Bureau of Alcohol, Tobacco, Firearms and Explosives. Firearms Questions and Answers Building one gun for yourself falls on the personal side of that line. Building several you never shoot and immediately list for sale does not.

If you genuinely built a gun for personal use and later decide to sell it, an occasional private sale is legal in Texas without a background check. State law does not require private sellers to run buyers through the National Instant Criminal Background Check System.10Texas State Law Library. How Can I Sell My Gun to Another Person? You are still on the hook for not selling to someone you know or have reason to believe is a prohibited person. Transferring a firearm to a convicted felon, a domestic violence offender, or anyone else barred under federal law is a felony. If you have any doubt about the buyer, routing the sale through a licensed dealer who can run a background check is the safer path. Expect that dealer to serialize the gun before completing the transfer, and factor any engraving fee into the plan.