SilencerCo ASR Muzzle Brake AC1557 5/8x24 Thread 458 Cal Black Steel

The SilencerCo ASR Muzzle Brake AC1557 delivers effective recoil reduction and rapid suppressor attachment for large caliber rifles. This precision-machined brake integrates seamlessly with SilencerCo's ASR mounting system while providing substantial muzzle control for 458 caliber firearms.

What Makes This Different

Unlike standard muzzle brakes that only reduce recoil, the ASR system combines brake functionality with quick-detach suppressor mounting. The proprietary ASR interface locks suppressors in place with a simple quarter-turn, eliminating the need for separate mounting hardware. Steel construction handles the intense pressures and heat generated by large bore cartridges that would damage aluminum alternatives.

Key Features

• Integrated ASR mount system for rapid suppressor attachment and removal
• 5/8"-24 TPI threading fits most 458 caliber rifle barrels
• Black nitride finish resists corrosion and reduces barrel signature
• Precision-machined steel construction rated for magnum cartridge pressures
• Multiple gas ports redirect muzzle blast to control recoil and muzzle rise
• Compatible with all SilencerCo ASR-mount suppressors
• Thread protector functionality when suppressor is not attached

Field testing demonstrates significant recoil reduction compared to bare muzzle threading, particularly beneficial for rapid follow-up shots with heavy 458 cartridges. The brake performs consistently across temperature ranges from sub-zero hunting conditions to extended range sessions. Hunters report improved accuracy on quick second shots, while competitive shooters appreciate faster target reacquisition.

Technical Specs

• Thread pitch: 5/8"-24 TPI
• Caliber compatibility: .458 and smaller
• Material: Heat-treated steel
• Finish: Black nitride coating
• Overall length: Approximately 2.5 inches
• Weight: 3.2 ounces
• Mounting system: ASR (Advanced Suppressor Ready)
• Country of origin: United States

This brake transforms any compatible rifle into a suppressor-ready platform while providing immediate recoil benefits. The ASR system's proven reliability and the brake's robust steel construction make this an essential upgrade for serious large caliber shooters.