Correct Screwdrivers

[Opening Day]

Any good high quality set will be expensive but worth it in the long run. One or two ruined screws will cost you about the same as the set of screwdrivers....

[TARNATION !!!]

Brownells does sell tips individually. When I get a moment, I can check which size does what screw slot. Buying just a set of Parker size bits could help the gun budget. The thing about the full sets is that if you play with a variety of guns, you will have a tip for pretty much any gun screw out there. As Eric said, they are worth every penny if you want to work on original Parker screws. While there are modern replacement screws available, they take delicate work to final fit the heads and at the end of the day, they are not original.
Cheers,
Jack

[Chris T.]

The thin bit set from Brownell's has most of the sizes you need. You do have to be carefull when selecting the width of the blades, if they are too wide or offset in the slot you can bugger up the edges of the hole. Alot of times you see guns with a slightly raised edge around the screw holes or the screw head looks too small for the hole after you put it back. I like to be able to see a little space on either side of the blade in the slot, and if you are really fussy you can break the sharp edges off of the blade with a good file to help prevent this from happening.