Just poking around for one of these that doesn't require taking out a second mortgage.
I suppose before I suggest anything, I should probably clarify with you. What constitutes second mortgage territory? For some that's $600 others it $100k
None of my 1911's are milled so I use these dovetail mounts from EGW.
(http://i.imgur.com/6weNuUol.jpg) (https://imgur.com/6weNuUo)
(http://i.imgur.com/3KrvlFQl.jpg) (https://imgur.com/3KrvlFQ)