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AR15.COM
8/15/2017 9:49:41 AM EDT
Has anyone done the bombproof gas block install themselves?  I have a drill press and vise and am considering doing it myself, I was just wondering if anyone else has and how they thought it went.
8/16/2017 3:53:12 AM EDT
[#1]
Yes, I've done one (the first and so far only time I've done such a procedure).  I have a small hobby milling machine, so that made it a good bit easier than using a drill press.  I used an end-cutting mill bit and did not go to the final notch depth in one pass (due to the flexibility of the bit).  I also used two v-blocks on the mill's bed to mount the barrel and keep it straight.

You could probably get away without using v-blocks, but you should definitely use some aluminum soft jaws with v-grooves to keep the barrel in place in your vise.  You can find them various places, especially automotive performance parts suppliers like Summit Racing.