DEAD AIR ARMAMENT RXD XENO(TM) 6MM BIRDCAGE FLASH HIDER The RXD Flash Hiders incorporate the iconic lines of the Ruger Mini-14 / Mini-30 "Bird Cage" Flash Suppressor with Dead Air SilencersA(R) Xeno(TM) mounting technology. They offer the superior flash suppression owners have come to expect with Ruger designs, combined with the proven reliability of theDead Air Xeno(TM) mounting system. The Xeno(TM) taper mounting system ensures a secure lock-up and exceptional repeatability. The Xeno(TM) design ensures accuracy, precision, and dependable performance, providing consistent and reliable performance every time, even during hard firing conditions. The Mfg: Dead Air Armament