I did not weigh the two between changes, but this one is lighter than my 20" chassis 22-250 that I had my thermal on. I also stuck a pmag 10 rounder in there to replace that steel mag. Again, huge change in feel, that bulky mag is just not in the way anymore.
This was just a way I could utilize what I already had laying around. I was pleased with the end result. YMMV.
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"We have Right on our side"