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7/20/2006 6:54:37 PM EDT
I have a DPMS m4 type upper.

I want to replace the pinned FSB with a Two Piece Gas block.

Probably this Yankee Hill one




Any pitfalls i shoild watch out for?  
7/20/2006 7:35:59 PM EDT
[#1]
Um.. if your going to put a front sight towerr on that, you may only be able to buy the ones from YHM because of propritary rail height on the gas block.
7/20/2006 7:38:56 PM EDT
[#2]
Good Point

Ill have to ask YH about that!
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