03-18-2022, 08:44 PM
When I first got into ARs, I started with PSA, my next build was off an Anderson lower and upper. I put a criterion 223 barrel onto the Anderson upper, it was a very tight fit - just as tight as BCM upper; and the Anderson upper/lower are the best matched, tight combo of all my ARs. The rifle is a very good shooting gun and cost the least. Guess I got luck that all the tolerances stacked just right.

