9mm Rated A-3 Birdcage Flash Hider

The 9mm A-3 bird cage flash hider is specifically made for a 9mm projectile to pass through when fired, where as a flash hider designed for a 5.56 x 45 (.223 Remington) is not designed for 9mm use .
Important Note: Always verify your muzzle devices are designed for 9mm before attempting to use them , as many muzzle devices are threaded  1/2″-28 TPI (Threads per inch) they may not be designed for use with 9mm.