Strike Industries Sail Comp for .223/5.56 1/2x28 Black Nitride One Size. The Sail comp derives its name from the unique baffle shape that redirects muzzle gasses out and upward providing recoil mitigation and muzzle rise control. The Sail Comp packs the performance of larger heavier devices into a compact lightweight package. Specifications for Strike Industries Sail Comp Chamber Brake: Manufacturer: Strike Industries Color: Black Caliber: 5.56x45mm NATO .223 Remington Threads per Inch: 1/2x28 Outer Diameter: 0.26 in Length: 1.575 in Additional Features: 1/2x28 Thread Condition: New Features of Strike Industries Sail Comp Chamber Brake Swept baffle shape captures and redirects muzzle gas for improved muzzle control Compact high efficiency single baffle design For 5.56/.223 1/2x28 thread Package Contents: Strike Industries Sail Comp Chamber Brake 1x SI Sail Comp 1x Crush Washer Strike Industries SI-SAIL-COMP-223/5.56: Sail Comp for .223/5.56 Black One Size