Pin & Weld
Roan Mountain, TN

Pin and weld is how many rifle builders reach a legal overall barrel length without registering an NFA short-barreled rifle, by permanently attaching a muzzle device to a shorter barrel so the combined length meets the federal minimum. 2nd Amendment Arts handles this precisely, with correct measurement and documentation on every job.

What Pin & Weld Involves:

A pin and weld permanently attaches a muzzle device, typically a flash hider or brake, to the barrel using a steel pin and a structural weld, so the device legally becomes a permanent part of the barrel rather than a removable accessory. This is the standard, ATF-recognized way to add a longer muzzle device to a barrel so the total length meets the federal minimum for a rifle without the barrel itself needing to be that long.

Getting this right takes correct measurement of overall length, proper pin placement, and a weld that is both structurally sound and won't damage the muzzle device or barrel crown.

Our Process:

We verify your target overall length, select pin placement to meet that length correctly, and weld the device on with attention to symmetry and structural integrity. We check overall length again after the weld cools, since some devices shift slightly during welding.

Why Choose 2nd Amendment Arts:

A pin and weld job that's off by even a small amount can leave a rifle out of legal compliance without the owner realizing it. We double-check overall length before and after welding, and we've done this enough times to know the common mistakes to avoid with different muzzle device styles.

Frequently Asked Questions

What is pin and weld, in plain terms?

It's a way to permanently attach a muzzle device to a barrel so the combined length counts as the barrel's legal length, without needing to register the firearm as a short-barreled rifle.

Is this legal in Tennessee?

Pin and weld is a standard, widely used method recognized by the ATF for meeting minimum barrel length requirements. As with any NFA-adjacent question, if you have specifics about your build we're happy to discuss them by phone, and complex cases may warrant your own legal or compliance research as well.

How permanent is the weld?

It's intended to be permanent — that's the point. Removing a properly pinned-and-welded device requires machining it off, not simple disassembly.

Can you do this on a barrel I already own?

Yes, bring in the barrel and the muzzle device you want attached, and we'll confirm the target length with you before starting.

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Call or text (423) 957-1149 to schedule,

312 West Street, Suite #1, Roan Mountain, TN 37687.

Serving collectors, hunters, and firearm owners across

Roan Mountain, Elizabethton, Johnson City, Tennessee

North Carolina, South Carolina, Virginia and Georgia

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