SureFire SOCOM Closed Tine .223/5.56 Flash Hider Black. The SFCT-556-1/2-28 closed-tine adapter closely represents a traditional birdcage flash hider with wrench flats for easy installation. Just like other SureFire SOCOM muzzle devices this adapter is precision machined from heat-treated stainless steel which is highly resistant to gas and particle erosion. Additionally these adapters utilize multiple bearing surfaces to ensure proper suppressor alignment every time. Specifications for SureFire SOCOM Closed Tine .223/5.56 Flash Hider: Manufacturer: SureFire Color: Black Caliber: 5.56x45mm NATO .223 Remington Fabric/Material: Stainless Steel Threads per Inch: 1/2x28 Length: 2.33 in Condition: New Features of SureFire SOCOM Closed Tine .223/5.56 Flash Hider CNC-machined to precisely align suppressor with the bore of host weapon Made from heat-treated stainless steel that is highly resistant to corrosion and gas/particle erosion Durable construction for long service life Package Contents: SureFire SOCOM Closed Tine .223/5.56 Flash Hider SureFire SFCT-556-1/2-28: SOCOM Closed Tine .223/5.56 Flash Hider Black