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Rainier Arms, LLC

Pinning & Welding: Standard

Pinning & Welding

Availability: In stock




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.

Standard Pin and Weld:
  • Rainier Arms XTC
  • Rainier Arms Compensator
  • Rainier Arms XD
  • A2 Extended Flash Hider
  • BattleComp (Matte Stainless only)
  • BCM Mod 1 Compensator
  • Fortis Red Brake
  • Noveske KX3
  • POF .223 Flash Hider
  • PWS
  • Seekins ATC
  • Smith Enterprises Vortex
  • VLTOR Flash Hider
  • YHM Phantom (Non-mount)
Muzzle devices not listed will be charged at the discretion of Rainier Arms. 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: Armorors
2504 Auburn Way N
Auburn WA 98002

Additional Info

Additional Info

Manufacturer Rainier Arms, LLC
Finish No
Barrel Length No
Caliber No
Configuration No
Option No
Gas Length No
Height No
Rail Length No
Mount No
Profile No
Reticle No
Co Witness No
Size No



Feel free to ask us any question regarding this product.