Kraken AK-47 Question/Problem
 

Okay, so my question is: Do I need the button on the front of the site/muzzle assembly in order to attach flash hider? I bought my gun used on craigslist and I am missing this particular part of the gun.

The "button" I am talking about is located just above the muzzle of the outer barrel, below the front sight. Sorry for the lack of descriptive pictures, but finding an appropriate picture is proving to be a challenge.

Not exactly.
Certain muzzles will not sit properly but a thread protector/nut will sit just fine.

If the certain muzzle break you are using needs to lign up a certain way teflone tape can work.