You can get a good set of hollowground screwdriver tips from various sources.
I don't remember where I got mine but I have one something like the one in the link.
http://www.midwayusa.com/viewProduct...tNumber=510765
If you have to deal with roll-pins, get a good set of punches made specifically for roll-pins. They will save you a lot of trouble.
I have a small hammer with a brass head. You don't need a monster hammer for most things and the brass head means that if you miss or hit something you didn't mean to you're less likely to tear up your gun.