Rearden DPB Features The Rearden DPB is a dual-purpose muzzle brake and suppressor mounting device threaded at 5/8x24 with a .375 bore size engineered for compatibility with Plan B-pattern suppressor mounting systems including Atlas Atlas XL and Plan B interfaces across a wide range of .30 caliber rifle platforms. This updated version features enlarged rear wrench flats that simplify installation and removal with standard tools ensuring proper torque engagement without risk of damaging the muzzle device during tightening or removal. Proper installation including correct torque and alignment verification is required to ensure safe and reliable operation and compatibility with the shooter s specific suppressor system should be verified before use. The black nitride .375 bore muzzle brake is finished with a nitride surface treatment that delivers superior hardness corrosion resistance and a consistent black appearance that holds up to sustained heat cycles and repeated suppressor attachment and detachment cycles without degradation. The DPB functions effectively in both suppressed and unsuppressed configurations providing meaningful recoil reduction as a standalone muzzle brake while serving as a reliable Plan B-compatible suppressor mounting interface when a compatible suppressor is attached. Note that the Atlas XL adapter is required when running the DPB with a compatible suppressor due to the two-port brake profile requiring additional clearance. Rearden DPB Specifications Manufacturer: Rearden Model: DPB Type: Muzzle Brake Thread Pitch: 5/8x24 Bore Size: .375 Finish: Black Nitride Color: Black Suppressor Compatibility: Atlas Atlas XL Plan B Wrench Flats: Enlarged Rear Function: Muzzle Brake and Suppressor Mounting Interface Shims Included: No