Arsenal AR-M1 4-Port Design Flash Hider 7.62x39mm 24×1.5mm Right Hand Threads. Stainless Steel with Cerakote finish. Manufactured in the USA by Arsenal Inc. – This is a US manufactured version of the iconic 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. True to its original design we manufacture these in the US so you can have a truly sought after flash hider for your AK.