Selling a Firearm Barrel Online in Colorado? That Might Soon Be Illegal.

The Bottom Line

If you want to buy or sell a standalone firearm barrel in Colorado, you'll soon have to do it in person through a federally licensed dealer. This bill closes what lawmakers see as a gap in firearm parts tracking by requiring strict record-keeping for the barrel itself, effectively ending casual private sales and direct-to-door online shipping for these specific parts.

What This Bill Actually Does

Currently, standalone firearm barrels aren't heavily regulated like serialized firearm receivers. You can generally buy a replacement barrel online and have it shipped to your house, or buy one from a buddy at the shooting range without any paperwork. SB26-043 changes that entirely by creating a strict regulatory framework specifically for standalone firearm barrels—defined as the tube through which a projectile is fired, including anything manufactured to a stage where it can readily be assembled into a barrel.

Starting July 1, 2026, the bill requires all sales and transfers of firearm barrels to be conducted in person by a Federally Licensed Firearm Dealer (FFL). It makes it an unclassified misdemeanor for a private individual to sell a barrel, or even to possess one with the intent to sell it. If caught, a first-time offender faces up to a $500 fine and 30 days in the county jail. On the buyer's side, you must be at least 18 years old and legally allowed to own a firearm under state and federal law. Purchasing a barrel illegally is classified as a civil infraction.

The legislation also sets up a new paper trail. Dealers must use a form prescribed by the Colorado Bureau of Investigation (CBI) to record every barrel transaction. This record must capture the date, the buyer's official government ID number, the buyer's full name, address, phone number, and date of birth, as well as the make, model, and caliber the barrel is designed for.

There are a few key exceptions. You don't need to go through this separate process if you are buying a barrel at the exact same time as a firearm that already requires a background check. The rules also don't apply to law enforcement agencies, the military, sales between licensed dealers, voluntary gun buyback programs, or barrels for certified curios or relics.

What It Means for You

If you're a firearms enthusiast, a competitive shooter, or someone who likes to build and customize your own guns, this bill represents a massive shift in how you acquire parts. The days of simply ordering a replacement barrel online and finding it in your mailbox are coming to an end. Instead, you will have to route that purchase through a local Federally Licensed Firearm Dealer (FFL), go into the shop in person, show your driver's license, and have the transaction permanently recorded.

This adds a layer of time, travel, and likely a transfer fee to what used to be a simple retail purchase. It also means you can no longer legally sell a spare barrel to a friend or list it on a local classifieds board. Doing so after July 1, 2026, could land you an unclassified misdemeanor. If you inherit a barrel from a deceased family member, the executor of the estate will still have to process that transfer through a licensed dealer to keep everything above board.

For residents who don't own guns, the impact here is about public safety and traceability. By requiring a paper trail for the most critical component of a weapon, lawmakers are making it significantly harder for prohibited individuals to assemble untraceable "ghost guns" or to swap out barrels to confuse ballistic investigations after a crime. It is important to note what this legislation doesn't do: it does not require a formal background check for the barrel itself, and it doesn't apply to barrels that are permanently attached to a firearm. The focus is entirely on regulating the loose, standalone parts that currently fly under the radar.

What It Means for Your Business

If you run a gun shop, a sporting goods store, or operate as a Federally Licensed Firearm Dealer (FFL) in Colorado, your operational playbook is about to get a bit thicker. Starting July 1, 2026, you will be the mandatory middleman for every standalone firearm barrel transaction in the state. This means you need to prepare for a new administrative workflow using forms that will be developed by the Colorado Bureau of Investigation (CBI).

For every single barrel sold or transferred, your team will need to meticulously record the buyer's official government ID, full name, residential address, telephone number, and date of birth. You'll also need to log the specific make, model, and caliber of the firearm the barrel is designed for, along with the full legal name of your employee who processed the sale. These records aren't just a suggestion; they must be kept securely for at least five years. Failing to maintain these logs puts your state dealer permit at direct risk of disciplinary action or revocation under Colorado law.

However, there is a distinct business opportunity here. Because direct-to-consumer online sales of barrels to Colorado residents will effectively be banned without an in-person FFL handoff, out-of-state online retailers will be forced to route those shipments through local shops like yours. You will likely want to implement a standard barrel transfer fee—similar to what you currently charge for processing firearm background checks—to compensate your business for the added administrative burden and the storage of these records. Now is a good time to start thinking about your pricing strategy for these transfers and how you'll train your staff to handle the new CBI paperwork flawlessly.

Follow the Money

Financially, this bill is very lightweight for the state. According to the nonpartisan fiscal note, there is zero required appropriation to make this happen, meaning it doesn't require a new budget allocation from taxpayers. The Colorado Bureau of Investigation (CBI) will need to design and distribute the new tracking form for dealers, but analysts expect the agency to absorb that minor workload within its existing resources.

At the local level, there could be a fractional financial impact. District attorneys and county jails might see a very slight bump in workload prosecuting or housing individuals who violate the new sales restrictions, and county courts might collect a small amount of revenue from the $500 fines attached to the new unclassified misdemeanor. However, state analysts assume that because the threat of losing a state dealer permit is so high, FFLs will strictly comply with the law, making the overall financial ripple effect on local governments virtually unnoticeable.

Where This Bill Stands

SB26-043 is currently In Committee. The latest official action came on 05/13/2026: House Third Reading Laid Over to 05/14/2026 - No Amendments.

That means the bill is still in the committee stage, and it is currently sitting in the State, Veterans, & Military Affairs. To keep moving, it would need to clear committee and then survive floor votes in both chambers.