I want to get a stripped lower to start my 300blk build. One of the larger LGS's has several in stock in the $99 to $150 range. I have seen many times that a lower is a lower and get the one with the marks you like. Are any of these on the list to avoid or a must buy? I'm going to pick one up on Monday when I put a .22 can on the 6-8 month waiting list. Detroit Gun Works ($99) RGuns S&W Rock River Arms Para Ordnance CMMG And they said they have others as well but this is most of what they sell. If the darn phone would stop ringing here at work I'd browse these makes and see what the roll marks look like!