Arsenal Inc Flash Hider Muzzle Device 7.62x39 24x1.5mm RH Black. 62x39mm 24x1.5mm Right Hand Threads. Stainless Steel with Cerakote finish. Bulgarian ''Egg Beater'' or ''Birdcage'' - the standard flash hider on the Bulgarian Military offerings. Upgraded to stainless steel and a Cerakote finish this also counts as a 922r compliance part and will give your AK the upgrade and look it has been missing. Specifications for Arsenal Inc AK-133S Flash Hider Muzzle Device: Manufacturer: Arsenal Inc Color: Black Caliber: 7.62x39mm Fabric/Material: Stainless Steel Threads per Inch: M24x1.5 Gun Make: Kalashnikov Gun Model: AK-47 Barrel Material: 316L Stainless Steel Package Contents: Arsenal Inc AK-133S Flash Hider Muzzle Device What firearm models does the manufacturer say Arsenal Inc AK-133S Flash Hider Muzzle Device is compatible with? The manufacturer says that Arsenal Inc AK-133S Flash Hider Muzzle Device is compatible with AK-47Arsenal Inc Arsenal Flash Hider Ak-133s For 7.62x39 24x1.5mm Rh Black