[DonVoigt]

I've had one or two with the "arm" the part that does the ejecting, too short.
Look ok on inspection, but don't work well at all.

Seems most of the ejectors I've installed required some tweaking to snap in correctly; usually at the round "retainer" at the back of the ejector that fits into the receiver hole to lock it in fore and aft. Sometimes the overall length is too long at the back too.

Kind of hard to tell original from used reproductions, but I'm sure some were/are that I have used.