SureFire® SOCOM Three-Prong Flash Hider & Fast-Attach® Suppressor Adapter – 5.56mm NATO / .223 Rem Caliber Class – 5/8"x24 Specialty Thread Pitch – Heat-Treated Stainless Steel with DLC Finish – SF3P-556-5-8-24
Product Description
The SureFire® SOCOM Three-Prong Flash Hider & Fast-Attach® Suppressor Adapter (SF3P-556-5-8-24) represents a highly specialized mechanical benchmark in muzzle signature mitigation and host accessory logistics, masterfully engineered to satisfy custom rifle architectures requiring a non-standard muzzle interface. While the vast majority of 5.56mm NATO and .223 Remington barrels are traditionally cut with a common 1/2"x28 thread pitch, modern tactical developments—such as ultra-heavy bull barrel precision target configurations, specialized 6mm ARC conversions utilizing 5.56-bored muzzle profiles, and custom multi-caliber defensive platforms—increasingly mandate the more robust 5/8"x24 thread footprint. This official factory-original component (084871334358) bridges that exact engineering divide perfectly, serving as an indispensable primary asset to eliminate structural compatibility bottlenecks while providing an uncompromising, duty-vetted foundation for active sound suppression loops.
The core performance triumph of this American-built muzzle adapter lies in its patented, open-tine three-prong geometry. Engineered to radically disrupt incandescent gas expansion pathways, it delivers a **greater than 99% reduction in visible muzzle flash signature** compared to raw un-suppressed muzzles or standard Mil-Spec A2 birdcage fittings. This dramatic suppression delta pays massive operational dividends by safeguarding the shooter's low-light night-vision boundaries and entirely neutralizing low-light tracking signatures on the firing line. Precision-machined from **U.S. mill-certified, heat-treated stainless steel bar stock**, the tines exhibit immense yield strength that refuses to bend, crack, or fracture during harsh administrative barricade-driving drills or extreme automatic firing tables.
Beyond its standalone signature-hiding mastery, this unit functions seamlessly as a world-class mounting interface for SureFire's legendary **SOCOM Series Fast-Attach® Sound Suppressors**. Moving past generic aftermarket muzzle mounts that suffer from dimensional drift and induce devastating baffle strikes, every SF3P is individually inspected for absolute bore-line concentricity. The precision single-point cut threads interface flawlessly with the barrel shoulder, while advanced **rear labyrinth seals** systematically mitigate high-pressure gas leakage away from the suppressor's locking ring. Coated in an ultra-hard, low-friction **Diamond-Like Carbon (DLC) finish** to resist aggressive carbon caking and gas-particle erosion, this **0.24-pound performance anchor** yields total mechanical authority over your rifle's forward workspace.
Includes: (1) Authentic SureFire SOCOM 3-Prong 5.56mm Flash Hider Adapter (5/8"x24 Specialty Thread, DLC Matte Black Finish), (1) Premium Color-Coded Timing Shim & Spacer Kit, (1) Tube of High-Strength Rocksett Thread Locking Compound, and Original Branded Factory Sealed Retail Staging Packaging.
*Compatibility & Safety Installation Warning: The SF3P-556-5-8-24 features an uncommon caliber-to-thread combination, mating a 5.56mm/.223 small-bore internal pathway with a larger 5/8"x24 thread pitch. Never attempt to force or install this muzzle device onto standard 7.62mm/.308 caliber barrels, 300 Blackout platforms, or any caliber metric exceeding a true .224" bullet diameter, as doing so will cause catastrophic firearm destruction and severe physical harm. For safe execution, always time this muzzle device utilizing the included multi-color shims—never utilize a standard crush washer. Torque the assembly onto your barrel shoulder to between 20 and 30 ft-lbs with the included Rocksett compound. Prior to workbench manipulation, visually and physically verify that the firearm is completely unloaded, cleared, and safe.
Key Features
- Elite 99% Flash Reduction: Patented open-prong tine layout dramatically diffuses expanding gases to eliminate nearly all visible flash, preserving low-light vision cells.
- Specialty 5/8"x24 Thread Footprint: Specifically engineered to accommodate custom heavy-profile 5.56mm barrels and advanced multi-caliber optimization platforms like 6mm ARC.
- Authentic SOCOM Suppressor Adapter: Serves as a rock-solid, zero-movement quick-detach base for SureFire SOCOM Series Fast-Attach® silencer systems.
- U.S. Mill-Certified Stainless Steel: Precision-milled from premium heat-treated structural steel alloys to withstand continuous thermal cycles and hard administrative impacts.
- Advanced Labyrinth Seal Tracks: Rear structural compression rings contain high-pressure gases inside the suppressor collar, preventing carbon locks and blowback leaks.
- Extreme-Duty DLC Outer Coating: Diamond-Like Carbon armor finish guards against high-velocity gas erosion and makes scrubbing away hard carbon cakes effortless.
Product Specifications
- Brand: SureFire® (Fountain Valley, California, USA)
- Product Line: Tactical Suppressor Adapters & Muzzle Performance Logistics
- Model Series Designation: SureFire SOCOM 3-Prong Flash Hider – 5/8x24 Specialty Edition
- SKU / MPN: SF3P-556-5-8-24 (Alternative Industry Identifiers: SF3P5565/824 / SF3P-556-5/8-24)
- Host Muzzle Thread Interface: 5/8"x24 TPI (Threads Per Inch) Standard Heavy Footprint
- Internal Bore Diameter Clearance: 5.56mm NATO / .223 Remington Class (Max Safe Projectile Diameter: .224")
- Suppressor Attachment Interface: SureFire SOCOM Fast-Attach® System (Excludes legacy legacy pre-SOCOM silencers)
- Chassis Construction Material: Precision-Machined Heat-Treated U.S. Mill-Certified Stainless Steel Bar Stock
- Surface Protection Finishing: Ultra-Durable Corrosion-Resistant Low-Glare Matte Black DLC (Diamond-Like Carbon)
- Total Longitudinal Length: ~2.60 Inches (6.60 cm) Performance Profile
- Product Net Component Weight: ~3.90 oz (~0.24 lbs) Balanced Muzzle Footprint
- Mounting Alignment Method: Timing Shims (Included) via Precision Shoulder Indexing
- Thread Retention Agent: Rocksett High-Temperature Liquid Adhesive (Included)
- Total Packaging Shipping Mass: ~0.50 lbs (Enclosed Inside Heavy Padded Protective Shipping Box Matrix)
- UPC Barcode Number: 084871334358
