Note that to restore the staking on the trigger pin that you'll need a special punch or need to make one up. You want it to be rounded over shape with a nose radius that pretty much matches a 1/8 diameter bearing ball.
The other spot to really watch is the small little spring and retention piece for the left side safety. I'd suggest you observe the orientation carefully before you take it apart and then do the actual removal of the little piece and spring inside of a clear plastic bag. Otherwise it's too easy for those pieces to try to leap for freedom.