American Precision Arms Gen 2 Fat Bastard Self Timing Brake - Stainless Steel, 5/8"-24 TPI Threads, 3.30" OAL, 1.115" Diameter for .338 Cal Rifles

The American Precision Arms Gen 2 Fat Bastard Self Timing Brake is a stainless steel muzzle brake engineered for .338 caliber rifles where recoil management and repeatability matter. The self-timing design eliminates the guesswork of clocking a brake to the bore—it finds its own zero automatically, so you get consistent performance shot to shot without having to dial in the timing. Built in stainless steel for durability in field conditions, this brake threads on via 5/8"-24 TPI, a common fastening standard for .338 magnums and other heavy hitters. At 3.30 inches overall length and 1.115 inches in diameter, it's proportioned for effective recoil reduction without excessive bulk or weight forward of the muzzle.

Fat Bastard brakes are purpose-built for shooters who log serious rounds at distance or hunt rifles that kick hard. The self-timing feature is the real win here—no need to remove and reinstall the brake multiple times to get the ports facing the right direction. Thread it on, and it settles into the optimal position. Stainless construction resists corrosion from field use, cleaning solvents, and weather, so the brake will perform and look solid for years of hunting and range work.

If you're running a .338 magnum or other rifle that needs aggressive recoil control and you want a brake that doesn't demand fussy installation, the Gen 2 Fat Bastard is purpose-built to simplify the job.

Key Features

• Self-timing design—automatically orients to the bore without clocking or reinstallation
• Stainless steel construction for corrosion resistance and long service life
• 5/8"-24 TPI threads, the standard for .338 caliber rifles
• Compact footprint: 3.30" OAL and 1.115" diameter
• Engineered for serious recoil reduction on magnum calibers

Specifications

Frequently Asked Questions

Will this muzzle brake fit my .338 rifle?

The Fat Bastard is threaded 5/8"-24 TPI and is designed for .338 caliber rifles. Confirm your rifle's muzzle thread pattern and caliber match these specs before purchase. If your rifle has a different thread pattern or is a different caliber, this brake is not compatible.

What is self-timing, and why does it matter?

Self-timing means the brake orients itself to the bore automatically as you thread it on. With traditional brakes, you may need to remove and reinstall the brake multiple times to align the ports correctly. The self-timing design eliminates that hassle and delivers consistent performance without manual clocking.

What material is the Gen 2 Fat Bastard made from?

The brake is constructed from stainless steel, which resists corrosion from solvents, water, and field conditions. This helps ensure reliable performance and appearance over extended use.