No failure to eject after 500 rrounds (so far) - Volquartsen Firearms OpticsPlanet Exclusive Ruger 10/22 Automatic Bolt Release and Bolt Tune-Up Kit Bundle

Installation is easy (especially if you have the right tools).

Auto Bolt Release:
I don't know enough history to know why the bolt doesn't just release when cocked like most modern firearms; but Ruger should just implement it but doesn't - more money for third parties.

Extractor:
I have decade-old 10/22 that fails to eject every dozen or so - regardless of the brand, type, or powder since day 1.
I replaced the extractor and haven't had an FTE in 500 rounds. With my luck, it will do so next range day.

Firing Pin:
Can't really comment, since I haven't experienced enough failure to fire that wasn't remedied by rotating the round 180 degrees. All the strikes were deep, so I've always chalked it up to the ammo.

After the experiment, I immediately installed the upgrades on my takedown.