What's likely the worst that can happen when a noobie attempts this and fails? You're talking to someone who's mechanical ability pathetically reaches its' absolute zenith while changing the brakes on his SUV, and it's a minor miracle I can accomplish that. I'm a financial analyst, and people who are financial analysts do so because they would starve to death if they were plumbers or carpenters or machinists, etc... Dont get me wrong, I would like to learn how to disassemble/reassemble a lock, but think it's probably wiser buying a cheap lock to learn with rather than the one that fits my rifle. One detail I failed to mention, which may be meaningless anyway, is that the R.O. on the barrel is thought to be a Rod Olsen (or Olson). Dunno is anyone's ever heard of him or if he's just a hobbyist.
To dismantle the lock,bring it to full cock and gently capture the mainspring with a small "C" clamp or a mainspring vise.
remove the spring and then,after soaking the mechanism in a GOOD penetrating agent like Kroil,Liquid Wrench,Break Free or a
50-50 mix of transmission fluid and acetone. Let it soak over night and then,with screw drivers that fit the screw slots and see
if they will turn. If they do,remove the sear spring first,then the sear and finally,the bridle.The fly in this lock is between the tumbler and
the plate so be careful not to drop it IF it is free.This is NOT a complex mechanism but caution is still needed for the first timer.
If you can change the brakes on you car then a lock will present no problems and if you can't get the brakes to work,install
a very loud horn.
Bob Roller