Quote:
Originally Posted by Vlim
Frames and receivers were made from rough forgings and gradually milled, drilled and worked into shape. Some 180+ machine steps for the frame only  |
There is also this: That frame has been blued/parkerized/phosphated (can't tell from the pics)...You only do that to a finished part...
If there are machining operations left to do, then that may be some kind of engineering sample...I have two Colt auto frames that were sent to a local corporation [Carborundum] to have an experimental finishing operation done...they're in the white; but 100% machined...