The Shadow Flash Hider is a more compact and economical version of the Eclipse flash hider that features three short, straight prongs for excellent flash hiding capability. The Shadow Flash Hider will clear any round up to 9mm in diameter (i.e. 300 Blackout, 5.56mm, .22LR, etc). It is marked “MA” and “9mm” to denote that it is a 922r compliant part made in the USA by Manticore Arms and comes with a crush washer.