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Pinning & Welding

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Pinning & Welding



Per regulations, a rifle barrel length must exceed 16" without being considered an NFA item. Our Pin & Weld service is available to permanently attach many muzzle devices to your barrel, thereby achieving compliance with these regulations. Compliance will vary depending on barrel length and muzzle device specifications. Call with any questions regarding this procedure.

If you are sending in an upper or barrel, actual shipping charges will be charged (approx. $15).

Typical shop time is 7-14 days + shipping time.

Permanantly attaching any suppressor mount VOIDS the warranty of any suppressor attached to the pinned mount.

What we’ll need from you: Muzzle, Barrel, gas block, and barrel nut.
Please print a copy of your invoice and ship your parts to

Rainier Arms LLC
ATTN: Armorers
2504 Auburn Way N
Auburn WA 98002

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Manufacturer Rainier Arms, LLC