ASR Muzzle Brake in .458 Cal 5/8x24 by SilencerCo

Unleash maximum control and unmatched suppressor readiness with the ASR Muzzle Brake in .458 Cal 5/8x24 by SilencerCo. Precision-engineered for large-bore rifles, this heavy-caliber muzzle brake combines aggressive recoil reduction with seamless compatibility for SilencerCo’s ASR (Active Spring Retention) Mount System. Whether you're shooting suppressed or unsuppressed, this rugged, high-performance brake is designed to elevate your shooting experience with superior stability and rapid suppressor attachment.

Built to endure the demands of big-bore platforms while ensuring quick and reliable suppressor use, the ASR Muzzle Brake is ideal for hunters, long-range shooters, and tactical professionals who rely on control, accuracy, and durability.

Product Description

The SilencerCo ASR Muzzle Brake in .458 Cal is a robust, high-efficiency recoil management device designed for rifles threaded in 5/8x24. Its three-port design vents high-pressure gases laterally to significantly reduce rearward recoil and muzzle rise, improving accuracy and shooter comfort—especially important when handling the powerful .458 caliber.

What sets this muzzle brake apart is its integration with the SilencerCo ASR Mount System, enabling fast, secure suppressor attachment and detachment without tools. Crafted from premium stainless steel and finished with a corrosion-resistant black oxide coating, it’s built to thrive in demanding environments and high-volume firing scenarios.

Key Features

• Advanced Recoil Reduction – Three-port design redirects expanding gases to minimize recoil and muzzle climb, optimizing control.

• ASR Mount System Compatible – Serves as a direct suppressor attachment point for SilencerCo suppressors using the ASR mounting system.

• Threaded for .458 Cal – 5/8x24 TPI thread pitch fits a wide range of .458 caliber rifles and barrels.

• Rugged Construction – Machined from heat-treated 17-4 stainless steel for long-term strength and durability.

• Corrosion-Resistant Finish – Black oxide treatment protects against fouling, wear, and environmental exposure.

• Secure and Repeatable Suppressor Fit – Ensures consistent zero and alignment when attaching suppressors.

• Easy Installation – Standard threaded installation with timing via crush washer or shim kit (not included).

Specifications

• Caliber Compatibility: .458 Cal

• Thread Pitch: 5/8x24 TPI

• Material: 17-4 stainless steel (heat-treated)

• Finish: Black oxide (matte, corrosion-resistant)

• Mount System: SilencerCo ASR

• Port Configuration: 3-port, directional

• Overall Length: 2.72 in

• Diameter: 0.98 in

• Weight: Approx. 3.9 oz

• Installation: Threaded; use crush washer or timing shims

Benefits

• Dramatically reduces recoil for improved comfort and shooting endurance

• Allows fast, tool-free suppressor attachment and removal with ASR-compatible silencers

• Maintains zero and suppressor alignment through repeatable mounting

• Enhances accuracy by limiting muzzle rise during rapid or heavy fire

• Adds suppressor-ready functionality to .458 caliber rifle platforms

• Provides durability and reliability in tactical, hunting, and precision applications

Usage Instructions

1. Ensure firearm is unloaded and secure.

2. Clean the barrel’s threaded muzzle.

3. Apply anti-seize compound as needed.

4. Thread the ASR Muzzle Brake onto the barrel (5/8x24 TPI) using a crush washer or shims for proper timing.

5. Torque to manufacturer specifications, aligning the ports horizontally.

6. Attach a compatible ASR suppressor and confirm alignment using a bore alignment rod.

Warranty

This product is backed by SilencerCo’s limited lifetime warranty, protecting against defects in materials and workmanship under standard use. For support, contact SilencerCo with proof of purchase and product details.

Upgrade your large-caliber rifle with the ASR Muzzle Brake in .458 Cal 5/8x24 by SilencerCo—engineered for unmatched recoil control and effortless suppressor integration on today’s most powerful platforms.