AK Krinkov muzzle brake question

[FFMedic]

I recently purchased a Krinkov style AK brake I have 2 questions about.

1. The brake has no detent for the AKs spring loaded retaining pin. How do I index the brake? Will a crushwasher from an AR-10 work perhaps? Is loctite needed? I have no idea.

2. There are 2 gas holes in the sides of the brake about 120 degrees apart. Do these face down, or up when installed correctly?

Thanks!
FFMedic

 

[nalioth]

There should be some slots in the cone.

These should be at 9 o'clock and 3 o'clock with the holes toward the top.


If this is threaded 14x1LH, you may not have these slots.

 

[Rubber_Duck]

The notches/slots on the cone part are to allow removal with a cleaning rod.

 

[FFMedic]

It was a left hand thread, fit on easily but there are no notches. How do I index it without them?

 

[-v-]

As I recall, a proper "krinkov" muzzle break has no definitive up or down, since all it is is an expansion chamber to provide sufficient back-pressure to operate the AKSU op-rod. It does not confer any recoil reduction or barrel stabilization a-la the '74 break. So all I can say is tighten it till its plenty tight, blue loctite may not be a bad idea either if your fairly rough with it.

 

[Semmerling]

There are three (3) distinctly different units out there. I cannot tell which one you actually have. Post photo.

Loctite Blue is correct on all, torque to 30 foot pounds on two of them.

 

[FFMedic]

It's this one, bought it from Cope's.

http://www.copesdistributing.net/product_info.php?cPath=32_34_83&products_id=427

FFMedic

 

[nalioth]

That's not a Krinkov brake. It really doesn't do anything but look neat and count as a US part.

See this thread for similar question.

Loctite or a crush washer'd be fine.