Just got in my first batch of Hammer7's.
I am really impressed by these, but there are a couple of things that need addressing.
first as soon as you get it check the cup seal, maybe add a drop of blue locktite, after only a few shots the cup seal was coming unscrewed.
second. the stock barrel's interior looks awesome but I wanted to try a few other barrels and found that none of the 1 inch based barrels fit because the pump handle is in the way. No Dye, Proto, Smart parts, Armson or Lapco I had would fit. J&J is fine. I am sure that with a little sanding they will clear, but its something to look at for future runs.
As I said I am very happy with these. sold out of my black already and my green ones are almost all spoken for when they come in next week.