I am in the process of converting a Webley no2 mk1 from dao to sa/da. For those of you that have no idea what that means (dao=double action only, sa/da= single action / double action) just like the no1 mk1 flare gun. I have the parts from a mk6 revolver. I was told they would work. Does anyone have a parts breakdown / drawing for the no1 mk1 flare pistol?