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SureFire SOCOM Muzzle Brake / Suppressor Adapter - .338 Caliber / .338 Lapua Mag, 5/8x24 Thread Pitch, Fast-Attach SOCOM Mounting Interface, Impulse Noise Reduction Porting, US Mill-Certified Stainless Steel, Black DLC Finish - SFMB-338-5/8-24 / 084871324182
Product Description
Taming the fierce recoil of heavy precision rifles chambered in .338 Lapua Magnum, .338 Norma, or 300 Win Mag while maintaining a rock-solid QD mounting point for your suppressor requires an adapter built to extreme structural tolerances. Standard muzzle devices can cause point-of-impact (POI) shifts, erratic gas dispersal, or carbon-locking when mounting heavy suppressors on your bench. The **SureFire® SOCOM Muzzle Brake / Fast-Attach Adapter (SFMB-338-5/8-24 / 084871324182)** flatlines these recoil and mounting bottlenecks, combining aggressive felt-recoil mitigation with SureFire's combat-proven Fast-Attach interface.
Proudly engineered, CNC-machined, and field-tested in the United States by SureFire, the SFMB-338 is forged from US mill-certified **heat-treated stainless steel** protected by a high-hardness black Diamond-Like Carbon (DLC) finish. Its proprietary impulse-delay porting layout redirects high-pressure muzzle gases laterally to significantly reduce felt recoil and muzzle rise, allowing precision shooters to track bullet trace downrange. Featuring a blind hole for pin-and-weld installation and precision rear indexing surfaces, this adapter serves as a rock-solid mounting platform for SureFire SOCOM338-Mi2 suppressors straight from your armorer bench.
Engineered to thread directly onto 5/8x24 TPI precision rifle barrels chambered up to .338 caliber, this factory-calibrated muzzle brake delivers zero-shift accuracy and maximum recoil control directly from your workspace bench.
*Armorer Bench Notes & Real-World Heavy Caliber Staging Guidance: The SureFire SFMB-338-5/8-24 package arrives workspace ready, containing the black DLC stainless steel muzzle brake, a precision timing shim kit, Rocksett high-temperature threadlocker, and installation instructions. SUREFIRE SOCOM338 FAST-ATTACH MOUNTING MATRIX: This adapter features SureFire's proprietary SOCOM Fast-Attach mounting collar. *Suppressor Compatibility Notice:* Designed specifically to interface with **SureFire SOCOM338 Series Fast-Attach Suppressors** (e.g., SOCOM338-Ti / SOCOM338-Mi2); it will *not* fit 5.56mm or 7.62mm SOCOM suppressors due to larger outer mounting dimensions. Armorer Workbench Custom Staging Sequence: 1. Visually and physically confirm your host rifle is completely clear of live ammunition, the magazine is removed, and the bolt is open and safe. 2. Thoroughly clean the 5/8x24 barrel threads using a wire brush and isopropyl alcohol to remove oil, grease, or carbon residue. 3. Perform a dry-fit timing check with the included shim pack to determine the exact shim combination needed to align top ports at 12 o'clock. 4. Do **NOT** use crush washers or split lock washers on your bench—use only the provided precision timing shims to guarantee concentricity and prevent baffle strikes. 5. Apply a few drops of included Rocksett threadlocker to clean barrel threads, slide shims into place, and thread the brake hand-tight. 6. Torque the brake to **20 to 30 foot-pounds** using a 3/4" wrench, verify alignment with a .338 caliber alignment rod, and allow Rocksett to cure 24 hours before rolling downrange.*
Key Features
- Proprietary Impulse-Delay Porting: Multi-stage lateral impulse ports significantly reduce felt recoil and muzzle rise for faster target re-acquisition and spotter trace visibility.
- SureFire Fast-Attach Mounting Interface: Features patented front and rear indexing surfaces to ensure minimal and repeatable point-of-impact (POI) shift when attaching a SOCOM338 suppressor.
- High-Tensile Stainless Steel Construction: Precision CNC-machined from US mill-certified heat-treated stainless steel to endure brutal muzzle blast temperatures and gas erosion.
- Black Diamond-Like Carbon (DLC) Finish: Treated with a tough, non-reflective DLC coating that resists carbon fouling, chemical solvents, and extreme environmental corrosion.
- Includes Complete Precision Shim Kit & Rocksett: Ships with color-coded timing shims and high-temp Rocksett threadlocker for accurate, concentric armorer bench installation.
- Blind Pin Hole for Pin & Weld Sets: Pre-drilled bottom hole allows armorers to permanently pin and weld the brake to meet minimum NFA overall barrel length requirements.
Product Specifications
- Brand: SureFire® (Fountain Valley, CA / Made in the USA)
- Model Line: SOCOM Fast-Attach Muzzle Brakes & Suppressor Adapters
- MPN/SKU Code: SFMB-338-5/8-24 (SOCOM .338 Muzzle Brake 5/8x24 Black SKU)
- UPC Code Profile: 084871324182
- Barrel Thread Standardization: 5/8x24 TPI (Threads Per Inch) Right-Hand Pitch
- Caliber Bore Compatibility: .338 Caliber / .338 Lapua Mag / .338 Norma / .300 Win Mag & Smaller
- Suppressor Series Interface: SureFire SOCOM338 Fast-Attach Suppressor Series
- Structural Material Base: Precision CNC-Machined US Mill-Certified Stainless Steel
- Exterior Finish Dressing: Non-Reflective Black Diamond-Like Carbon (DLC) Protective Armor
- Full Kit Component Checklist: 1x SFMB-338 Brake, Precision Shim Kit, Rocksett Tube, User Manual
- Packaging Format Class: Factory Original Sealed SureFire Retail Hang Box Packaging
- Product Type Category: Rifle Accessories / Muzzle Brakes & Suppressor Adapters
- Overall Physical Length: ~2.68 Inches (~68.0 mm Overall Linear Length)
- Net Component Mass: ~4.10 Ounces (~116.2 Grams Muzzle Device Mass)
- Global Quality Certifications: Formulated to Rigid US Military (SOCOM) and Tactical Duty Metrics
- Warranty Tracking Protection: Fully Backed by SureFire No-Hassle Lifetime Guarantee
