AT3™ A2 Flash Hider for AR-9 - 1/2x28 - 9mm - Crush Washer Included
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From orders that included this itemProduct description
AT3 9mm Flash Hider with 1/2×28 Threads
This 9mm version of the A2 birdcage makes a perfect fit for your next AR-9 build, or for a .350 Legend AR-15. This flash hider features five ports for directing concussion and gasses to keep the muzzle steady, and an open cone to disperse flash. This flash hider uses 1/2×28 threads, which is most common for 9mm AR-15s today; but make sure the barrel you’re installing it on also uses the same thread pitch.
Be sure to pick up an Armorer’s Wrench for a simple installation!
Features
- Bored for 9mm – includes .350 Legend!
- 1/2×28 Threads
- Machined steel with phosphate finish for excellent corrosion resistance
- Backed by the Lifetime AT3 Warranty
Specifications
- Caliber: 9mm or .350 Legend
- Threads: 1/2×28
- Material: Steel
- Finish: Phosphate
- Weight: 2.2 oz (including crush washer)
Customer reviews 6
AT3 Tactical · Thanks, Mike—we're glad you love the great price, fast shipping, and quality of our AT3™ A2 Flash Hider for AR-9!
AT3 Tactical · Thank you for taking the time to leave us a review. We're so glad to hear that our AT3™ 9mm A2 Flash Hider is working perfectly for you and that you found it to be a great deal. We appreciate your support and hope to see you back at our store soon.
AT3 Tactical · Thank you for your patience! We are glad to hear that you are finally able to enjoy our AT3™ 9mm A2 Flash Hider for AR-15. We appreciate your support and hope you continue to enjoy our products. Happy shooting!
Questions & Answers 1
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ANY PROBLEM FITTING THIS TO RUGER 9MM PC9 CARBINE
RICHARD · Oct 2, 2025AT3 Support Team — Thanks for reaching out Should be no issues
Warranty & returns
Backed by the AT3 Lifetime Warranty!

All AT3 Tactical Brand Products carry a lifetime warranty against manufacturer’s defects.
This includes AT3 Red Dot Sights, Handguards, Iron Sights, and any other product that carries the “AT3 Tactical” or “AT3™” name. For other brands (ex. Magpul or Troy), please refer to the manufacturer’s warranty policy.
In the event that your AT3™ product becomes unusable, we will repair or replace the product at no charge to you.
If we cannot repair your product, we will replace it with a product in perfect working order of equal or better physical condition. The warranty is fully transferable, but we may require information about the original purchase to validate the authenticity of the product.
If your product is in need of warranty service, please contact AT3 Tactical to start the process
Our contact info is available here. To expedite processing, please provide your order information and description of the defect.
Please note: The AT3 Lifetime Warranty does not cover loss, theft, intentional damage or cosmetic damage that doesn’t affect the performance of the product.
90-day no-hassle returns
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.















