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[Service] AR-15 Upper Receiver Assembly

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[Service] AR-15 Upper Receiver Assembly

Our in-house armorer will professionally assemble your upper receiver components using the proper tools and gauges to ensure that everything is within proper tolerance and specification.

The assembly process includes:

  • Installation of forward assist assembly and ejection port cover onto a stripped upper receiver (if applicable)
  • Installation of gas block & gas tube (will dimple barrel if required; drilling and pinning a gas block is a separate charge available here)
  • Checking for gas tube alignment in receiver
  • Barrel installation utilizing thermal fitting and alignment when necessary
  • Handguard installation utilizing manufacturer-specific barrel nut wrenches, torque values, anti-seize grease

WO employees have combined ceritifcations from Sons of Liberty Gun Works, School of the American Rifle, and Semper Paratus Arms; along with a staff armorer with 18 cumulative years of experience as a USMC 2111/Army 91F (Armorer) with experience as a weapons repair contractor for SOCOM.

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