Well this question comes up pretty often so I thought I'd do a quick tutorial with a step by step guide using photographs and a little discriptive text. Its attached as a .pdf file 4 pages in length. All you need tool wise is a small hammer and a nail or punch. In the tutorial I used a G clamp to compress the firing pin spring but its actually easier to use your body weight (But I couldn't photograph it if I did it that way). Anyway hopefully members find this useful.