PS90 SBR – 10.4″ Short Barrel Rifle Kit with 1/2″ x 28 thread adapter


A perfect choice for your PS90 SBR project. Comes with a CMMG 10.4″ barrel and CMMG 1/2″ x 28 thread adapter for most suppressors.

CMMG 10.4" Barrel for PS90

The best choice for your PS90 SBR project. Pair this with a CMMG PS90 Flash hider or thread adaptor to complete your SBR. Tax Stamp and gunsmithing required.

In stock

CMMG Thread Adapter for PS90

Use this with a short barrel on your PS90 SBR build to attach your favorite muzzle device.  Adapts the standard M12 x 1.0 LH threads of the PS90 to 1/2″-28 which is compatible with most 5.56/.223 muzzle devices.

In stock

Optional Installation

SKU: cmmg-sbr-kit-threaded Categories: , , , Tag:


PS90 SBR Barrel Kit will allow you to convert your factory PS90 16″ barrel to a 10.4″ threaded Short Barrel Rifle. Installation is available at an additional cost and is recommended if you are not a gunsmith or have never removed the front barrel shroud from a factory PS90 before.

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 MUST match what’s on your order.
  • Dealers: include a copy of your FFL

Shipping address:

National Firearm Sales Inc |
11070 Wiles Road
Coral Springs, FL 33076