Best pcc bolt on the market... - JP Enterprises Enhanced Bolt/Carrier, 9mm

In combination with their recoil system, this is by far the smoothest most reliable bolt for a PCC (Pistol Caliber Carbine) build on the market today. I topped a QC-10 GSF (Glock Magazine Compatible) lower with a New Frontier AR (not the 9mm version) side charging upper and using a JP Barrel (which I highly recommend for both their feed mouth and chamber dimensions), and the JP recoil system for my build. This is the by far flattest and smoothest feel I've ever had on a PCC. JP is by far the leader when it comes to PCC builds, and having seen hundreds of different home made builds at USPSA matches, I can tell you without a doubt that the JP guns always run, when others are still trying to figure out what went wrong on theirs.