Rollingb
You just aren't up on the way of gunsmithing. I have it on good authority that this is a classic example of an uside down lock. The lock sits on the bottom of the rifle, it's just being shown down side up. This way the flash in the pan doesn't bother you cause it's not in your face.
Sure is purdy though - even if upside down. I wish I had the talent.
C F