PS90 SBR Conversion - Labor Only

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Have National Firearm Sales professionally install your short barrel and laser engrave your receiver on an existing PS90 with factory 16″ barrel and shroud to a Short Barrel Rifle.

IMPORTANT NOTICE: This service is for labor and laser engraving of parts that have been purchased from National Firearm Sales. We do not install parts acquired from third parties.

IMPORTANT NOTICE: Approval from the ATF is required prior to installing this or any barrel under 16" on your firearm. Installation without a tax stamp from the ATF is illegal and may result in fines and prison.

Instructions for shipping us your receiver when choosing the installation option:

  • ship us ONLY the receiver in good condition, with all accessories removed
  • print the invoice from your confirmation email and include with your shipment
  • Ship your items signature required using FedEx, USPS or UPS. Plenty of bubble wrap/cushioned packing material and insurance is recommended.
  • DO NOT ship the frame or any aftermarket accessories


  • Include a copy of your approved Form 1 with affixed Tax Stamp from the BATF 
  • Individuals: include a copy of your driver's license. All information, including name and shipping address, MUST match what's on your order AND tax stamp.  If any information is different, you must use a qualfied FFL to ship and receive your item.
  • Dealers: include a copy of your FFL

Shipping address:

National Firearm Sales Inc |
936 Clint Moore Rd
Boca Raton, FL 33487

*Damage to the factory barrel shroud and/or factory barrel may be necessary to install these components.