Rearden SPB Muzzle Brake .375 Caliber 5/8x24

Overview

Rearden SPB Overview The Rearden SPB is a 17-4 PH H900 stainless steel suppressor-ready muzzle brake in 5/8x24 thread pitch with a .375 bore size and black nitride finish rated to 67 HRC surface hardness engineered for Atlas Atlas XL and Plan B mounting system compatibility. Atlas adapter overrun is approximately 1.050 while the Atlas XL adapter produces no overrun and enlarged rear wrench flats on this updated version simplify installation and removal. A precision-machined nitride-finished muzzle brake built to Rearden s quality standard. Rearden SPB Features The Rearden SPB is a suppressor-ready muzzle brake manufactured from 17-4 PH H900 stainless steel and threaded at 5/8x24 with a .375 bore size engineered for direct compatibility with Atlas Atlas XL and Plan B suppressor mounting systems for shooters who want effective recoil reduction and a reliable suppressor interface from a single muzzle device. This updated version features enlarged rear wrench flats that simplify installation and ensure proper torque engagement without risk of damaging the muzzle device during tightening or removal. The Atlas XL adapter produces no overrun for the most compact suppressor package possible while a standard Atlas adapter adds approximately 1.050 of overrun for shooters running the standard Atlas configuration. The black nitride 17-4 PH H900 suppressor-ready muzzle brake achieves approximately 67 HRC surface hardness through the nitride treatment process providing superior wear resistance corrosion protection and a consistent black appearance through repeated suppressor attachment cycles and sustained heat exposure. An alignment rod should always be used to ensure the entire system is properly set up and all surfaces should be cleaned with the muzzle device torqued and Rocksett-applied to the barrel before use. Shooters should note that use on Q-brand suppressors voids the Q warranty and Rearden recommends following all standard installation practices for safe and reliable operation. Rearden SPB Specifications Manufacturer: Rearden Model: SPB Type: Muzzle Brake Thread Pitch: 5/8x24 Bore Size: .375 Material: 17-4 PH Stainless Steel (H900) Finish: Black Nitride Surface Hardness: 67 HRC Color: Black Suppressor Compatibility: Atlas Atlas XL Plan B Atlas Adapter Overrun: 1.050 Atlas XL Adapter Overrun: None Wrench Flats: Enlarged Rear Shims Included: No