CMMG AR-15 Zeroed Muzzle Brake w/ Crush Washer – .223/5.56 NATO – 1/2×28

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CMMG AR-15 Zeroed Lower Parts Kit with Ambi Safety Selector


CMMG AR-15 Zeroed Lower Parts Kit with Ambi Safety Selector

Radian Raptor-LT Ambidextrous AR-15 Charging Handle - Black


Radian Raptor-LT Ambidextrous AR 15 Charging Handle

Maximize Shooting Experience with a CMMG Muzzle Brake

The CMMG AR-15 Zeroed Muzzle Brake is the perfect muzzle device for AR-15 builds chambered in popular calibers like 5.56mm/.223, .224 Valkyrie, and .22 Nosler. This muzzle brake features angled ports that provide excellent recoil control and effectively minimized muzzle rise when firing.

This results in an excellent return to target acquisition for the shooters giving them more accurate follow-up shots.

Modern 2-Chamber Design To Match AR-15 Barrels

The CMMG ZEROED Muzzle Brake is made from 4140 Steel with a Nitride finish to ensure maximum durability as well as corrosion resistance for long-term use.

It also utilizes a new aggressive chamber design that improves gas flow and reduces felt recoil significantly.  The 2-chamber design looks great on any standard profile barrel while effectively eliminating recoil leaving your rifle shooting flat and soft.

All CMMG products come with our Lifetime Quality Guarantee.

Package Includes:

  • Muzzle Brake 5.56mm | 1/2-28
  • Crush Washer


  • CMMG Item Number: 55DA525
  • Muzzle Brake
  • Caliber: 5.56mm/.223
  • 4140 Steel Construction
  • Angled Ports Reduce Recoil
  • Thread Pattern: 1/2-28
  • Nitride Finish
  • Color: Black

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.

CMMG Warranty

Seller warrants to Buyer that for a period of 6 months from the Delivery Date, all Goods will be:

  • Free from any defects in workmanship, material, and design
  • Conform to applicable specifications[, drawings, designs, samples and other requirements specified by Buyer]
  • Fit for their intended purpose and operate as intended
  • Merchantable
  • Free and clear of all liens, security interests or other encumbrances
  • Not infringe or misappropriate any third party’s patent or other intellectual property rights.

Inspection and Rejection of Nonconforming Goods

The Buyer has the right to inspect the Goods for a period of thirty (30) days after the Delivery Date. Buyer, at its sole option, may inspect all or a sample of the Goods and may reject all or any portion of the Goods if it determines the Goods are non-conforming or defective.

If Buyer rejects any portion of the Goods, Buyer has the right, effective upon written notice to Seller, to:

  • Rescind the Order in its entirety
  • Accept the Goods at a reasonably reduced price
  • Reject the Goods and require replacement of the rejected Goods.


If Buyer requires replacement of the Goods, Seller shall, at its expense, promptly/within 30 days replace the nonconforming Goods and pay for all related expenses, including, but not limited to, transportation charges for the return of the defective goods and the delivery of replacement Goods.

If Seller fails to timely deliver replacement Goods, Buyer may replace them with goods from a third party and charge Seller the cost thereof and terminate this Order for cause pursuant to Section 20.

Any inspection or other action by Buyer under this Section shall not reduce or otherwise affect Seller’s obligations under the Order, and Buyer shall have the right to conduct further inspections after Seller has carried out its remedial actions.

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