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 Flash Hider Shims
Matth3wdean  [Team Member]
4/12/2008 5:01:27 PM EST
I have Noveske barrel and am using a YHM phantom flash hider. I have tried about 5 different crush washers and when tightening by hand they still have about 7/8 of a revolution to go before the flash hider is timed up. Does any one know who sells shims for the 1/2 diameter threads?

Matt Carper
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drmgallen  [Team Member]
4/12/2008 5:03:12 PM EST
You need to get a "peel" washer....
cjk1  [Member]
4/12/2008 5:04:15 PM EST

Originally Posted By drmgallen:
You need to get a "peel" washer....


Agreed.

Hoplophile  [Team Member]
4/12/2008 5:09:32 PM EST

Originally Posted By Matth3wdean:
I have Noveske barrel and am using a YHM phantom flash hider. I have tried about 5 different crush washers and when tightening by hand they still have about 7/8 of a revolution to go before the flash hider is timed up.

7/8 of a revolution from what point? From when you first get tension? From when you decide the torque is getting too high? From when the crush washer is completely flat?
drmgallen  [Team Member]
4/12/2008 5:24:59 PM EST

Originally Posted By Hoplophile:

Originally Posted By Matth3wdean:
I have Noveske barrel and am using a YHM phantom flash hider. I have tried about 5 different crush washers and when tightening by hand they still have about 7/8 of a revolution to go before the flash hider is timed up.

7/8 of a revolution from what point? From when you first get tension? From when you decide the torque is getting too high? From when the crush washer is completely flat?


Good point...I did not read the "tightening by hand" part...
cjk1  [Member]
4/12/2008 5:33:25 PM EST

Originally Posted By drmgallen:

Originally Posted By Hoplophile:
Originally Posted By Matth3wdean:
I have Noveske barrel and am using a YHM phantom flash hider. I have tried about 5 different crush washers and when tightening by hand they still have about 7/8 of a revolution to go before the flash hider is timed up.

7/8 of a revolution from what point? From when you first get tension? From when you decide the torque is getting too high? From when the crush washer is completely flat?


Good point...I did not read the "tightening by hand" part...[/quote]

Missed that as well...
shrikefan  [Team Member]
4/12/2008 5:42:46 PM EST
Try here:

www.ar15.com/forums/topic.html?b=7&f=22&t=439604
Matth3wdean  [Team Member]
4/12/2008 7:12:54 PM EST
From when I first get tension, but from my experience there is not a big difference between first tension and appropriate torque for the flash hider. I am not going to be able to crank 7/8 if a revolution into this flash hider unless I put more than reasonable effort into it.

Also I have looked into the shims listed above, but they say they are for 7.62mm rifles that have 5/8" threads.
drmgallen  [Team Member]
4/12/2008 7:36:00 PM EST
Primary Weapons Systems ( a site sponsor) has peel washers for $2.95

Check the industry forum for the link...

Geez...I just check the price for the shipping...you should just buy the FSC556 and be done with it... I have two of these breaks and I cannot be happier...
mike12345  [Member]
4/12/2008 8:29:14 PM EST
The army uses shims (not peel or crush) I have no idea where to get them, I dident know about the shims before I got stuck as one of the unit armorers.

Just what I wanted to do, spend two weeks in a BS class re-learning how to work on guns... we dident even disassemble anything farther than field stripping because we dident have the roll pins to replace the ones we remove. You have to replace them in the army... not allowed to reuse them.

The army is very gay... they want people to only do maintanance on their level... which is 10, 20, or 30 By TM and above the 45 bravos is the civilians. Which means even though I have done something before I cant do it because its above my 20 "level"

chris65  [Member]
4/15/2008 2:35:24 PM EST
Another option: facing the breach side of the Flash Hider on a lathe, until it times "slots-up" for its individual barrel with a lock washer? Then re-park FH.
Forest  [Moderator]
4/15/2008 2:54:38 PM EST

Originally Posted By mike12345:
The army uses shims (not peel or crush) I have no idea where to get them, I dident know about the shims before I got stuck as one of the unit armorers.


The Army used 'Peel Washers', which are shims that are stuck together and can be 'peeled off' to make a thinner washer.

As an armorer I'm sure you've read the -23? This is cover on page 1-2, and is used throughout the manual.
Forest  [Moderator]
4/15/2008 2:56:17 PM EST

Originally Posted By Matth3wdean:
I...when tightening by hand they still have about 7/8 of a revolution to go before the flash hider is timed up. ...


What does your torque wrench read?
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