So an update on this topic. I shot the JP vs Cobalt. JP stock was lifted up to be parallel with the tube as suggested. The Cobalt still has a smoother feel to it. Its nothing substantial that makes or breaks any deal on either gun. However, I did find out the hard way, that in my my current configuration of both rifles, that the JP requires more gas pressure to cycle reliably. With that said, I used the same ammo in the Cobalt, and it seems it is way overgassed. The brass gets tossed out at almost 12 oclock direction, and a few times it got stuck back in the chamber and caused a nasty jam. I am currently trying to find a happy medium to run 1 ammo type for both guns to cycle 100%. Both guns have low mass bolts, adjustable gas blocks, and the cobalt muzzle brakes. JP is running JP silent captured, and Cobalt is factory Cobalt buffer system.