Probably not since both the bbl nut and upper receiver are aluminum. If they were different metals that trick would very likely work.
Ahhhh, that’s kind of what I thought.
I have no hands-on experience with that DPMS rail, but looking at the pics, I kind of had the feeling that the barrel nut was aluminum. Definitely no coefficient of expansion there.
“A leader is best when people barely know he exists, when his work is done, his aim fulfilled, they will say: we did it ourselves.” -Lao Tzu
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