Great product, cycles flawlessly - JP Enterprises EnhancedBolt 9mm AR Bolt Carrier Group (BCG) Kit - JP Standard Silent Capture Spring

Bought this for a PCC upgrade, and it lived up to the hipe.
Dropped in, and did not need any tuning running 147GN handloads at PF of 135.
I can shoot as fast i can pull the trigger, without issue. (Previous buffer and spring set up took a lot of tuning, and still had occasional cycling issue).
It also feels like there is less muzzle lift, but hard to quantify, as i only shoot with in 50 yards, so it was pretty accurate in both configs.
Its a little pricey, and is why initially on this build i went the traditional set up, (bolt, buffer,and spring).
Ultimately, it would have saved me money $ vs buying conventional buffer, spring, bolt, set up, then upgrading, if i just started with this.
However, it being a gun i shoot in competition, i had a few cycling issues, that cost me score. Ultimately, i upgraded to this and have not had another failure, (al least not due to cycling).
Would highly recommend.