Sabot - thanks but I don't think I will need one. All this spring looks like to me is an "L" shaped spring the has the long end slipping under the front trigger and the short end into a hole in the trigger frame. The only thing is I don't know if that short end is peened to keep it from coming back through or if you have to remove the front trigger then slip the long end throug the hole, then reinstall the trigger on top of it.