American Precision Firearms Gen 4 Fat Bastard Muzzle Brake, Stainless, 30 Cal

The American Precision Firearms Gen 4 Fat Bastard Muzzle Brake in 30 caliber (brand part no. G4F5830S) is a self-timing stainless steel brake threaded 5/8×24 and built for shooters running .30-caliber precision and hunting rifles who want flatter, more controllable recoil. American Precision Firearms designed the Gen 4 line around calibrated, tunable top ports tested for size, location, and gas flow to virtually eliminate vertical muzzle movement, so the shooter stays on target through the shot. The stainless steel construction resists corrosion in the field better than standard carbon steel.

Key Specifications

• Bored for 30 caliber projectiles, matching the brake to common .30-caliber cartridges.
• Threaded 5/8×24, a common precision and hunting rifle thread pitch.
• Machined from stainless steel for strong corrosion resistance in the field.
• Features self-timing installation, so the brake indexes correctly without shims.
• Uses tunable top ports, calibrated for maximum vertical recoil control.
• Measures 3.30 inches overall length and 1.10 inches in diameter, a compact footprint for most builds.

Frequently Asked Questions

What caliber is this brake designed for? It is bored for 30 caliber projectiles.

Why choose stainless steel for a muzzle brake? Stainless steel resists corrosion better than standard carbon steel, which matters for hunting rifles used in the field.

Buy the American Precision Firearms Gen 4 Fat Bastard Muzzle Brake

Hunters and precision shooters running .30-caliber rifles who want a corrosion-resistant brake with genuinely flat recoil control will get real value from the Gen 4’s tunable port design. Order it through our Lubbock, Texas gun shop and browse more AR muzzle devices from American Precision Firearms and other top brands.