08-16-2017, 10:03 PM
joedirt199 Wrote:This is why I always prefer the BCM upper receivers as they have the tightest barrel extension of all receivers I have found. Haven't needed to freeze the barrel and heat the receiver to get them to mate up, just a nice tight fit that can be assembled with a rubber mallet.
I have heard this before, but I can't ever find them in stock. I'm on a bunch of in stock notification lists right now. The Mega uppers are very, very tight and require heat or barrel in the freezer, but I don't like the finish, I think they are coated with something, definitely not just anodized.

