MPN: 0011510039 / 0011510037


  • Innovative port design
  • Superior recoil reduction
  • Reduce muzzle rise
  • Made is U.S.A.


  • Caliber: .308 Win. / 7.62 NATO / 300 Blackout
  • Material: 416R Stainless Steel
  • Finish: Melonited Black or Bead Blasted Stainless Steel
  • Length: 2.43"
  • Outer Diameter: 0.87"
  • Weight: 3.1 oz.
  • Thread: 5/8" x 24


  • Any .30 caliber barrel with 5/8"-24 thread pitch


  • 1x Seekins Precision ATC 5/8x24 Muzzle Brake
  • 1x Muzzle Lock Nut


For one of the most technologically-advanced compensators available today, check out the AR 308 / 300 BLK Advanced Tactical Compensator (ATC) by Seekins Precision. As with all its other products, Seekins has proven its commitment to quality yet again with this compensator, also known as a muzzle brake.

This Seekins .30 Cal. ATC Muzzle Brake was designed using computational fluid dynamics (CFD) analysis software. CFD analysis software enabled the company to accurately determine the optimal number and configuration of the ports on either side of the compensator, thus achieving maximum recoil reduction. Muzzle rise is also decreased, making it the perfect tool for those who want to perform speedy follow-up shots and rapid target transitions.

The installation of this compensator is one of the easiest tasks you will ever undertake. Instead of the trial-and-error method using a peel washer, this AR muzzle brake uses an innovative knurled timing nut for smooth installation and removal. Cleaning is a breeze, as is swapping muzzle devices for different applications.

The .30 Cal. ATC comes in two distinct colors to allow you to choose the one that best complements your rifle. This compensator will fit barrels chambered in .308 Winchester / 7.62 NATO, as well as 300 Blackout. If you’re looking for a compensator that will fit the AR10 / 308 AR platform, this Seekins .30 Cal. ATC is for you.

This ATC muzzle brake is for barrels chambered in .308 Win. / 7.62 NATO / 300 BLK, for .223 Rem. / 5.56 NATO, please look at the Seekins Precision AR 5.56 ATC Muzzle Brake.

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