Just installed a Phantom FS with a crush washer.  I hand tighten it and the closed port is approximately at 1 o'clock.  I, then, indexed it to 6 o'clock with the 3rd open slot at 12 o'clock.  Am I done?  I noticed the threading had not completely bottomed out.  There is still a gap between the front of the muzzle and the back of the FS .  It took considerable amount of force to crush the washer to the current indexing point.  Should I continue to crush it until the threading bottoms out?  Then again, at that point, the slots may not be indexed correctly. Is it OK to have that gap?  Thanks.

I did one earlier today,sound like  you got it right.
Few pictures. :D
 

   


 

TG

If you want the closed port at 6:00, your done.  People who shoot with night vision equipment put the closed port at 12:00.  

I think if you use the A1 flash hider, you can actually get more muzzle climb with rapid fire (some of the flash goes below the muzzle).