SilencerCo® ASR™ 3-Port Muzzle Brake – Big Bore .458 Caliber / .460 Black Powder – 3/4x24 TPI – AC2631
The SilencerCo® ASR™ 3-Port Muzzle Brake (AC2631) is a premium, tactical-grade muzzle device engineered to tame heavy-recoiling big-bore rifle systems while doubling as a robust quick-detach suppressor host. While firing large-caliber projectiles like the .458 SOCOM or .45-70 Government generates violent, punishing recoil and immense muzzle climb—frequently throwing shooters entirely off target and slowing down critical follow-up tracking strings—the SilencerCo ASR brake thoroughly solves those liabilities. This high-performance stabilization hub (816413025369) routes intense gas expansion outward to significantly soften physical recoil, providing extreme shooter control whether you are hunting large game unsuppressed or locking down your signature suppressor.
Precision-machined from premium structural steel and finished in a slick, rock-hard Black Nitride finish, this rugged component is built to endure extreme gas pressures, violent thermal spikes, and abrasive blast residue. The defining technical edge of the AC2631 architecture is its seamless integration with SilencerCo's industry-proven **Active Spring Retention (ASR™) mount system**. Featuring a dedicated external taper seal alignment track and structural locking channels, it allows operators to mount an ASR-equipped silencer with an intuitive, one-handed push, spin, and collar-lock sequence. This multi-layered retention engineering ensures an absolute, repeatable lockup that completely prevents your suppressor from walking loose or rotating under sustained strings of fire.
The true functional highlight of this specific variant is its optimization for massive big-bore barrel architectures. Threaded in a heavy-duty, highly specialized 3/4x24 TPI pitch, its generous internal bore is custom-clearance tracked to safely manage all .458 Caliber and .460 caliber bullets without risk of internal copper clipping. Shipped as a complete turnkey installation package, it includes an official single-use packet of **Rocksett™ high-temperature thread locker** along with a comprehensive **stainless steel indexing shim kit** to achieve textbook muzzle port timing. This American-made muzzle anchor delivers a flat, manageable recoil profile for defensive brush guns, custom heavy-bore tactical platforms, and suppressed hunting builds alike.
Includes: (1) SilencerCo ASR 3-Port Muzzle Brake (.458 Cal / 3/4x24), (1) Precision Stainless Steel Timing Shim Assortment Pack, and (1) Tube of High-Temperature Rocksett™ Thread Locking Compound.
*Suppressor Mounting Compatibility Note: The external ASR mounting track on this muzzle brake pairs directly with SilencerCo ASR Quick-Detach Mount accessories. It serves as an immediate host for industry-standard suppressors equipped with Bravo or Charlie ASR mounts, including the Hybrid 46, Hybrid 46M, Omega 300, Chimera 300, and Velos LBP series silencers.
Key Features
- High-Efficiency 3-Port Diverter: Deep side ports efficiently redirect high-volume powder gases laterally to slash felt recoil and completely flatten vertical muzzle rise.
- Active Spring Retention (ASR™) Interface: External alignment tracks provide a rock-solid quick-detach foundation, ensuring your suppressor snaps on fast and locks securely in place.
- Slick Black Nitride Armor: Liquid salt bath nitriding treats the steel core, yielding a highly scratch-resistant shield that prevents baked-on carbon from welding to the taper face.
- Specialized 3/4x24 Big-Bore Boring: Oversized inner clearance pathway confidently stabilizes large-format thumper projectiles like .458 SOCOM, .450 Bushmaster, and .45-70 Govt.
- Complete Indexing Shim Package: Ships out with a set of multi-thickness stainless steel shims, enabling perfect mechanical timing and alignment against your barrel shoulder.
- Battle-Proven USA Engineering: Completely designed, machined, and surface-finished in the United States to fulfill rigorous tactical duty and backcountry tracking requirements.
Product Specifications
- Brand: SilencerCo® (West Valley City, UT)
- Product Line: ASR™ Suppression Mount & Muzzle Component Series
- Model Name: ASR Muzzle Brake 3/4x24 .458
- SKU / MPN: AC2631
- Thread Pitch Profile: 3/4" x 24 TPI (Threads Per Inch)
- Caliber Accommodation Class: .458 Caliber / .460 Caliber Baseline (.458 SOCOM / .45-70 Govt / .450 Bushmaster)
- Suppressor Lock Interface: SilencerCo ASR™ Quick-Detach Alpha, Bravo, & Charlie Mount Hubs
- Muzzle Device Style: High-Efficiency 3-Port Recoil Mitigation Brake
- Chassis Housing Material: Premium High-Tensile Structural Steel
- Surface Treatment Finish: Smooth Liquid Black Nitride Coating
- Installation Thread Adhesive: Rocksett™ Liquid Compound Included
- Timing Hardware Matrix: Multiple Stainless Steel Alignment Shims Included
- Country of Origin: Proudly Manufactured and Designed in the USA
- Product Net Component Weight: ~4.00 oz (113.4 g)
- UPC: 816413025369
