Masterpiece Arms Muzzle Brakes are designed for PRS/NRL style competitions where recoil reduction is required to allow the shooter to spot their impacts/misses for follow-up shots. Using a proprietary recoil testing system, these have been tweaked to achieve a 63% reduction in recoil.
Designed by the same company that produces the Competition BA Chassis for Remington 700s.
The brake uses a reverse jam nut collar system and utilizes a reverse thread to push the collar up against the shoulder of the barrel. It not only eliminates the need for ground shims, but also aligns the ID of the brake perpendicular with the shoulder of the barrel, minimizing initial point of impact shift. This design is licensed to MPA from Faxon Industries.
Thread – 5/8-24 tpi
Caliber – 6.5mm or 30
Material: Black Nitrided High Tensile Strength Steel
Function: Big Time Reduction of Recoil
Design: The multiple blast ports redirects gases to counter recoil from the firearm.
The Masterpiece Arms Muzzle Brake is licensed from Alamo Four Star|Faxon Industries and is almost identical to the Alamo Four Star Cowl Induction Brake which won the testing performed by Cal Van Zant at the Precision Rifle Blog massive muzzle brake test performed in 2015. You can read the post by clicking on this link.
This make the MPA Premium Muzzle Brake one of the best muzzle brakes for 308 bolt actions and many other bolt action rifles like 6mm and 6.5mm bolt actions.