Many times I have worked on one of my guns and had a tight screw… Often times that goes bad and I end up messing up a the screw and have an ugly head to look at there after. Other times I get my impact driver out which sometimes works, but once I broke a bit doing that.
Well, my problem is that my screwdrivers have slanted edges, but the screw’s head is a straight slot. After doing some looking around online I found the Chapman 9600 Gunsmith Screwdriver kit. It has bits in it that have straight edges instead of the slanted edges found on most screw drivers.
Another nice feature in this Chapman set is their midget wrench which supposedly allows you to apply up to 200 lbs of torque. According to the instructions those 200 lbs is enough force to break some of the bits in the set. They also included a nice chart of showing each bit and at what torque each bit breaks.
All in all I was very impressed with the kit and how much thought the Chapman company seemed to put into their product. I tried it on one of my screws on my Siler lock and it seemed to work well.