Breek Arms BRK4431 Echo Single Port Plan B Black Nitride Steel 5/8"x24 Threads 30 Cal

The Breek Arms BRK4431 Echo is a compact single-port muzzle brake engineered for shooters running the Plan B suppressor mounting system. Built from 4140 hardened steel with a black nitride finish, this brake delivers serious recoil management in a footprint small enough to pair seamlessly with modern suppressors. The 30-caliber Echo uses a horizontal blast-vectoring port design to push gas and recoil downrange and to the side, keeping your rifle flat and tracking smooth on follow-up shots—whether you're behind a precision rifle at extended range or working fast from an intermediate position.

Weighing just 2.0 ounces and measuring 1.75 inches overall, the Echo doesn't add bulk or length to your barrel. It threads directly onto 5/8x24 barrels and locks into the Plan B fast-attach suppressor mount, so you can transition between shooting suppressed and unsuppressed in seconds without tools. The single-port design keeps blast signature and concussion relatively focused compared to multi-port brakes, which matters if you're hunting or shooting from enclosed ranges.

This is purpose-built hardware for anyone invested in the Plan B ecosystem—shooters who want a lightweight, compact brake that doesn't sacrifice recoil control and integrates cleanly with their suppressor setup.

Key Features

• Horizontal blast-vectoring port reduces recoil and muzzle rise
• Lightweight: 2.0 oz for minimal barrel weight penalty
• Compact profile: 1.75" length pairs well with suppressors
• 4140 hardened steel construction with black nitride finish for durability
• Fast-attach design for Plan B suppressor mounts—no tools needed for mounting/removal
• Threaded 5/8x24 (30-caliber specification)

Specifications

Frequently Asked Questions

Will this muzzle brake work with my suppressor?

The Echo is designed specifically for the Plan B suppressor mounting system and features fast-attach compatibility. If you're running a Plan B suppressor or planning to, this brake integrates directly without additional adapters.

What caliber rifles does this fit?

This brake is chambered for .30 caliber rifles and threads 5/8x24. It will fit any 30-cal rifle with 5/8x24 muzzle threads, including 308 Win, 300 Win Mag, 300 Norma Mag, and other .30-caliber cartridges.

How much does this add to barrel length?

The Echo measures 1.75 inches overall, so it adds approximately 1.75" to your barrel length. Its compact profile is designed to keep overall rifle length manageable, even when used with a suppressor.

Can I remove it without tools?

The Echo features a fast-attach design for the Plan B mounting system, allowing tool-free mounting and removal if you're swapping between suppressed and unsuppressed shooting.