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11/22/2013 2:10:00 PM EDT
I installed a Troy Ind low pro gas block on an 18" WOA SPR barrel and had to dremel down the gas block a little bit and hammer the sucker on

After I got it all the way down I eyeballed the alignment which looked spot on

But, is there any way to check before barrel install that the gas block is 100% aligned on the barrel?

Thanks for your help
11/22/2013 4:10:14 PM EDT
[#1]
i would have measured them twice ( shoulder to gas port and edge of block to port )  then beat it on once
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