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2/11/2009 11:59:58 AM EDT
just got a new barrel.  I'm putting the DD M4Rail on it, and after I'll have to install a standard A2 flash suppressor.  these need to be indexed right?  what kind of washer should I be looking to use?  also any tips on the free-float/barrel installation would be welcome.  I'm a first-timer.  

thanks,

bill
2/11/2009 12:42:57 PM EDT
[#1]
Crush washer on supressor, with the closed side toward the bottom. to keep dust from flying when shooting prone.
DD M4 Instructions...
2/11/2009 1:38:55 PM EDT
[#2]
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