My Present Arms Gunners Mount Kit is awesome. The one thing I wanted different was the Receiver Alignment Block. It does not seem to fit right on non-mil spec buffer tubes I work on. How can they know all the sizes?
You can see the gap here, it will not seat all the way.
And that is because the buffer tube rail is too wide.
So I do what I do and made one. Seats all the way down
And tightly fits the buffer tube rail
The metal rod it ¼ inch and I cut it down to just below the top.
Then topped it off with a couple of the included caps.
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