I'm wanting to go to a 1:7 twist, My only option right now seems to be DPMS. I intend also to stick a RAS MRE on there (I hate the extra barrel length sticking out the end, which is why I got the dissy to begin with).
This all gets pretty pricey, but will eventually replace my dissy upper.
I honestly don't know if I will have an extra b/bc/ch - depends on what deals I get on a new upper.
Then again, if it starts looking too expensive, I may stick with what I have now - I am really kinda schizoid with these projects - a lot of it stems on from not wanting to be without a proven shooter for any length of time.