I bought one of these in part due to this thread. Had some break in issues then got to about 500 rounds before putting it away while the F1 was pending. Got it back last week, Choate came in and I am off to the range today. This will get a bunch of rounds as it's so much fun to shoot so I'll be picking up one of these kits linked for the eventual day. Just need my Omega 9K to get sprung next