The American Precision Arms Gen 4 Little Bastard Self Timing Stainless muzzle brake, in 6.5mm and finished in stainless, incorporates calibrated U.R.P tunable top ports designed for maximum adjustment, delivering the flattest shooting brake performance available as those ports are tested for size, location, and gas flow to achieve zero vertical movement. Built with a 5/8-24 thread pattern, 2.70 inches in overall length and a 1 inch diameter, this Gen 4 design optimizes recoil control and muzzle rise for precision shooting across a range of rifles chambered in 6.5mm, making it a versatile choice for target shooting, long-range accuracy, and tactical applications. The burnished stainless construction provides durability under demanding field conditions while maintaining a clean, corrosion-resistant profile. By fine-tuning the top ports, shooters can tailor gas flow to their rifle setup, enhancing shot-to-shot consistency and keeping sights on target faster. Ideal for athletes seeking enhanced follow-up shot speed and reduced muzzle jump, this brake pairs seamlessly with 6.5mm barrels that require reliable, repeatable performance in a compact, self-timing design.