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5/19/2011 5:42:29 PM EDT
hey guys, I got a FN 20" govt flattop upper that I want to change the gas block/front sight out to a railed version.  Yankee
Hill makes a nice one see here but i can't seem to find one in stock any where.  

Are there any other options? I am just not up on all the parts these days.
5/19/2011 6:26:25 PM EDT
[#1]
You could alter your existing FSB to fit under the FF handguard/rail. Then you can attach a wide variety of sights on the front of your new YHM rail.
5/19/2011 6:50:55 PM EDT
[#2]
I saw a railed yhm gas block at midwayusa
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