Breek Arms Plan B Echo Single-Port Muzzle Brake - 5/8x24 TPI - .30 cal

The Breek Arms Plan B Echo is a purpose-built muzzle brake for shooters running the Plan B or Atlas suppressor mounting system — an ultra-compact single-port brake that vectors propellant gas horizontally at 90 degrees to drive the muzzle down and back on target, sized and threaded specifically to serve as the dedicated host device for seamless suppressor attachment.

The Breek Arms Plan B Echo Single-Port Muzzle Brake is a .30 caliber muzzle brake threaded 5/8x24 TPI for use with Plan B and Atlas suppressor mounting systems. It is machined from 4140 hardened steel with a nitride finish, weighs 2.0 oz, and ships with a peel washer for timing. Torque specification is 20–30 ft-lbs, requiring a 13/16-inch wrench for installation. Designed and manufactured in the USA.

The Plan B mounting system — shared with the Atlas suppressor platform — is designed around a dedicated muzzle device that serves as both a functional brake and the mounting interface for the suppressor, allowing the shooter to run the rifle with the brake alone and attach the suppressor without removing or re-timing the muzzle device. The Echo is that dedicated device: a single-port brake whose 90-degree horizontal blast-vectoring geometry punches gas straight out to the sides rather than upward or at an angle, applying maximum downward force on the muzzle to reduce rise and keep the sight picture on target through the recoil cycle. Single-port designs concentrate all available blast energy into one gas event per shot rather than dividing it across multiple ports, which delivers more aggressive muzzle control per cubic inch of brake volume — an important trade-off in an ultra-compact form factor where overall length is constrained by the suppressor mounting interface geometry. The 4140 hardened steel construction with nitride finish handles sustained fire temperatures and the mechanical loading of suppressor attachment cycles without dimensional change at the muzzle threads or the mounting interface surfaces. The included peel washer allows precise timing to the correct port orientation at the specified torque range without over-tightening the barrel thread interface.

90-degree horizontal single-port blast vectoring concentrates all available gas energy into direct lateral force for maximum muzzle-down authority in an ultra-compact form factor. 4140 hardened steel with nitride finish maintains thread and mounting interface dimensions through sustained fire and repeated suppressor attachment cycles. Peel washer included for precise timing at spec torque.

The right muzzle brake for Plan B and Atlas suppressor system users who want a compact, high-performance brake that does its job unsuppressed and transitions to suppressor use without touching the muzzle device.