It is sort of ironic that the DoD is jumping onto the PCC bandwagon. SIG already has the MPX but I would opt for something more AR like that accepts the same magazines as the standard issue handgun. While the semi-auto PCCs tend to be straight blowback, a short stroke piston with an adjustable gas block would make it easy to tune for sub-sonic or automatic fire. I'm not sure how much lower a big contract could drive parts prices down. It seems like the market is already flooded with lots of options at some of the lowest prices I have ever seen.