Sons of Liberty Gun Works NOX9 AR-15 Flash Hider – 9 Ports – Dead Air Sandman Keymount – 1/2×28

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Upgraded .223/5.56 Muzzle Device For Left & Right Handed Shooters

This Sons of Liberty Gun Works NOX Flash Hider is an outstanding muzzle device designed for 5.56 barrels with a 1/2×28 thread pitch. It features a three-prong design that significantly reduces concussion while also controlling both flash and muzzle rise when firing.

This version of NOX556 is designed with a neutral configuration with a total of 9 gas ports positioned on the 3, 9, and 12 O’clock to accommodate left and right-handed shooters.


 Dead Air Sandman Keymount

This Sons of Liberty Gun Works NOX Flash Hider is made from 4140 Chrome Moly Steel and this version features the Dead Air Sandman Keymount (Keymo) for quickly attaching the suppressor to the end of your rifle.

The NOX will also bring 13.7” builds to a perfect 16” OAL when permanently affixed to the barrel (As per ATF instruction).


  • 9 gas ports positioned at 3, 9, and 12 O’clock
  • Threaded 1/2×28 for 5.56 barrels
  • Dead Air Sandman Suppressor Keymount compatible
  • Machined from 4140 steel
  • Three-prong design for ultimate flash suppression
  • Corrosion-resistant QPQ finish
  • Internal serration for enhanced effect
  • Low dust signature


  • Caliber: .223/5.56 NATO
  • Material: Stainless Steel
  • Finish: Melonited
  • Thread Pitch: 1/2X28 TPI (5.56)
  • Weight: .5 lbs
  • Dimensions: 6 × 1.5 × 2 in

Have Questions About this Product?

The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.

If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.

SOLGW Warranty

We are happy to replace or refund your money for any defective firearms or parts, including ar15 barrels, bolt carrier group, lower parts kits, or any m4 accessories or rifles. We are dedicated to providing top-quality products to our customers, however, We do not offer refunds on ammunition.


Returns are ONLY accepted for merchandise found defective immediately upon receipt. Sons of Liberty Gun Works will provide YOUR CHOICE of a replacement item (pending availability) or full refund AND pay the return shipping cost on all firearms and accessories found defective upon receipt. For your added convenience, will also arrange for the defective items to be picked up and returned to us by the original shipper.

Contact Details:

  • Telephone: 210-852-2859
  • Email:

Disclaimer: Manufacturer’s warranty is subject to change without prior notice.

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