Today I needed an offset hammer extension. I didn't have one because I had sold the last one with my 30 Carbine barrel. Decided to just drill a hole in the hammer and tap it 6-32 and put a cap head screw in it with a sleeve over the threads, sounds good to me. First, these things are case hardened, very tough on the outside, after I wore through the outside it drilled through easy to the other side, then flaked off around the hole when the drill exited. Still looks good to me, started running in the tap, the entire tip of hammer broke off. Round 2: Moved the drill down the hammer a little so that there was more steel to the sides of the hole, drilled it through again, now it looks better, lots of metal on both sides of the hole. Ran the tap in, three threads and that part broke off the hammer, now I have a very short hammer that will clear any scope, I just can't cock it without a pair of vice grips on the stub that is left. Guess it is a bad plan to drill holes through the hammer. Anyone got a spare hammer laying around? Larry