06-18-2016, 04:19 PM
204 AR Wrote:I use that exact gas block on several builds because I don't like set screw blocks anymore. I actually noticed an accuracy difference when I took a set screw block off and put the yhm on. But, I modify that block with a set screw to make it adjustable. If you're handy with stuff like that, drill and tap for a #8 set screw through the side and right through the gas port hole. I install the gas tube first as you will go through the very bottom edge of it also.
The tricky part is getting the hole threaded deep enough. A blind hole tap to finish it would be great but haven't found one yet. And go slow and don't break the tap, I did that once and it's impossible to remove it.
I chose these because they did not break the bank and were not set screw (but non adjustable) as I read about an accuracy change when using set screw type gas blocks. Thought about if for a while and it did make sense if you are putting pressure directly onto any part of the barrel, to what amount I do not know.
Would you mind taking a few pics of your mod, I just want to make sure that what I am picturing in my head is exactly what you described. No hurry of course, it is as hot as hell here (looking @ 120F on Monday
) so building time for me.Thanks in advance,
Bob