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AT3 Tactical 3-Port Muzzle Brake

AT3™ AR-15 3-Port Muzzle Brake with Crush Washer – 5/8×24 Thread for .300 BLK/.308 WIN

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Lifetime WarrantyOn All AT3 Brand Products

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.

Fast & Free Shipping On orders over $50

You will receive fast, free shipping for all orders over $50

Shipping cost is $7.99 for orders under $50. We ship with UPS or USPS, depending on the item.

Most orders received by 1pm CST ship the same day

You will receive an email with tracking information at the time of shipment. To expedite shipping, we may ship your order from multiple warehouses. Orders placed on weekends, holidays, or after 1pm will ship the following business day.

.30 Cal AR15?  Not a problem with this aggressive Muzzle Brake/Compensator

With greater caliber comes greater recoil – whether you’re shooting a .300 BLK AR15 or a .308 WIN AR10, .30 caliber is a lot different than standard 5.56.  So, you might consider something more aggressive to help reduce recoil and stay on target.  Similar to more expensive designs on the market, this 3-port muzzle brake/compensator does the same job as many 3-port brakes – dispersing recoil and muzzle blast to either side of the shooter, reducing recoil going into the shooter’s shoulder.  It also compensates through three angled ports in the top of the device, which counteracts recoil by subtly pulling the rifle forward, and pushing it downward.  The result is a device that diminishes muzzle flip and overall force for the shooter, leaving only the momentum of the bolt carrier to deal with.

It’s a great US-made product, includes a crush washer, and is backed by the AT3 Lifetime Warranty.


  • Diameter: 1 inch
  • Wrench Flats: 0.75 inch
  • Length: 2.5 inch
  • Weight: 3.5 oz.
  • Finish: Black Nitride

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Customer Reviews

Based on 1 review

It's sweet no recoil

Thanks for sharing your feedback, Jimmie. We're glad you're satisfied with your purchase. Cheers!