@znhunter:
I have seen locksmiths struggle with U-Change cylinders using electric picking guns...
Learn how to SPP...
There are only 5 pins and 4 bitting depths with U-Change locks...
Everything inside these locks is much larger than a typical split pin tumbler lock...
In addition to the thread linked by mh, there are others which discuss U-Change locks here:
A detailed internal breakdown of the lock:
U-Change user-rekeyable lock breakdownIt seems a bit odd that someone with such a low post count would be seeking information specifically about U-Change locks which are a niche market item... I am not accusing you of having malicious intentions or anything but this lock is definitely not a newbie type item... Care to explain your interest in more detail ?
~~ Evan