Marc you are correct on how I went about getting these pics. This method of using magnetism to show cracking in a carbon steel part is very sensitive. I use this method in pressure vessels and storage tanks in chemical plants, paper mills and refinerys around the SE portion of the United States. It is quick and very good at showing areas of metal fatigue that you can not see with your naked eye. I attached a photo of what I used.
There is also a cheaper way of doing this as well and can be done on stainless steel as well as carbon steel. Its liquid dye penetrant examination. You spray on a red dye and let it sit for a bit and wash the dye off and then spray a white developer on the part after its dry. If there is a crack or pin hole or something open to the surface the dye will pull out of the crack and you will be able to see it.
Just food for thought on those out there that wanna inspect there own luger parts quick and easy.
Thanks for all yalls responses back.
Well I guess a new luger will be in the makings soon, real soon.
Skeeter