One of my biggest pet peeves is when I go to look over a firearm for sale, and find that someone, at sometime, has tried to repair, fix, make better, look inside for who knows why, all with the wrong tools to do it with. You can see this a mile away, bunged up screw heads, mismatched bluing, and best of all, the cross hatch pattern from a framing hammer. I collect vintage guns, and when I see a firearm with virgin screws, original bluing and just plain left alone written all over it, I pay more, simple as that. Do yourself a favor and buy some gunsmithing tools, brass drifts, brass headed hammer and especially the hollow ground screwdriver kit made just for firearms. Your firearms will thank you, and down the road when you decide to sell, it will be worth it.