Here's another photo of the Lancaster "Classic" AK-74 with modified milled receiver. This photo was found on an old flash drive of mine and was taken before I could truly figure out all of my camera's features (apologies for the resolution).
The optic is the SIG SAUER-distributed 4.0MOA red dot, holographic sight (I forget the model name at the moment) sitting atop a UTG slide-on rail mount. It held zero and, though not allowing a co-witness, was pretty comfortable to use.
As always, any and all questions/comments are welcomed.