Dead Air Silencers RXD R-Series Flash Hider Front Cap 5.56. 30 caliber muzzle device designed to function both as an effective brake and as a low-profile mounting interface for the Dead Air Xeno system. Its radial port design manages recoil while maintaining a compact profile. When paired with a Xeno Adapter-equipped suppressor the taper interface provides ease of attachment secure lock-up and consistent alignment. Specifications for Dead Air Silencers RXD R-Series Flash Hider Front Cap: Manufacturer: Dead Air Silencers Fabric/Material: 17-4PH Stainless Steel Color: Black Finish: Nitrided Length: 0.53 in Weight: 0.71 oz Package Contents: Dead Air Silencers RXD R-Series Flash Hider Front Cap Dead Air Silencers RXD206: RXD R-Series Flash Hider Front Cap 5.56