Introducing the .30 Cal version of our highly acclaimed Dn5 brake, designed specifically for calibers that produce higher gas pressures and volumes, such as .308 Win, 7mm PRC, 7mm SAUM and other .308 or smaller calibers. This brake is engineered for use in PRS (Precision Rifle series) competitions, where extreme recoil reduction is essential for maintaining target alignment during rapid follow-up shots. Through our advanced testing system, we have refined the design to achieve an impressive 63% reduction in recoil. The innovative jam nut collar system allows the shooter to securely position the nut and brake against each other at the optimal point on the rifle's muzzle. Additionally, the two machined flats facilitate leveling the brake body and provide a convenient interface for installation with an adjustable wrench. This design eliminates the need for ground shims while ensuring that the inner diameter of the brake is perfectly aligned perpendicular to the shoulder of the barrel, significantly minimizing any initial point of iMasterPiece Armsct shift. Elevate your shooting experience with the 30 Cal Dn5 brake, designed for precision and control in competitive settings.