The American Precision Arms Gen 4 Fat Bastard 6mm Muzzle Brake in a steel finish is built for maximum recoil control, ideal for competitive and precision shooters running high-performance 6mm cartridges. With a robust 3.30-inch length, 1.10-inch diameter, and 5/8x24 thread pattern, this brake delivers aggressive performance and unmatched consistency.
Easier approval. $0 Down. Easy installments up to 36 months. Approvals up to $5,000. No hard credit inquires for Pre-Approval. Apply and Buy Today!
Shoot Now, Pay Later® 4 Pay
Pay in 4. Four Payments, no interest for purchases between $150 to $985. No hard credit inquires for Pre-Approval. Apply and Buy Today!
Shoot Now, Pay Later® 4 Pay and Traditional Financing
Try Pay in 4 at 0% interest for purchases between $150 to $985. Or Select Easy installments up to 36 months. Approvals up to $5,000. No hard credit inquires for Pre-Approval. Apply and Buy Today!
The Gen 4 Fat Bastard features APA’s signature self-timing design, allowing for precise, tool-free installation and repeatable alignment—no crush washers or shims required. Its large profile and refined port design are optimized for extreme recoil reduction and flat shooting, making it a top choice for long-range competitors.
Made from high-strength steel, this brake is built to withstand the demands of frequent, high-volume shooting while maintaining exceptional performance.
APA Gen 4 Fat Bastard Specifications
Caliber: 6mm
Series: Self Timing
Thread Pattern: 5/8x24
Length: 3.30 inches
Diameter: 1.10 inches
Weight: 6.40 oz
Finish: Steel
Category: Brakes & Compensators
Brand: American Precision Arms
Model: Gen 4 Fat Bastard
More Information
Condition
New in Box
Finish Per Color
Stainless
Manufacturer
American Precision Arms
Manufacturer Part Number
G4F5860S
Model
Gen 4 Fat Bastard
Type
Muzzle Brakes
UPC
810131791445
WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to WWW.P65WARNINGS.CA.GOV
Questions And Answers
Reviews
Due to increased state legislation around firearms, you must be 18 to access our site.