AI 308 flash suppressor installation

[Baer45]

I had my barrel threaded for a SF SOCOM flash hider. It threaded on fine but at the end of its thread about an1/8 to 2/16 inch gap is left. Should I use a crush washer to take up space? I don’t need to time a flashhider and the can fits and works on it find but I don’t like the gap. I would think a crush washer would give enough reverse pressure to keep FS from turning (plus blue lock tight) I can’t be the only one with this problem..what’s the fix?

 

[carlsbad]

Flash suppressors generally do have an orientation.

 

[Baer45]

Flash suppressors generally do have an orientation.

Even if I used shims on a three prong flash hider, I would still have the gap to fill....

 

[GenePoole]

If everything was done to print, it should fit flush. I haven't seen a print for SF SOCOM, but from their site, it looks like they undercut their threads for relief.I generally go by AAC's prints as they seem to have a very comprehensive list of thread specs.

http://www.advanced-armament.com/assets/images/pdf/manuals/ThreadGuideREV_01-040513.PDF

 

[boltfluter]

Sounds like there is an under cut or thread relief missing. Compare the print to what you actually received. Should be fairly easy to figure out. Good luck.

Paul