Re: 1911 Slide Lightening / Machining Question
The OP is most likely fully aware of the tech challenges of significantly altering the weight of the reciprocating parts.
Wish I could point you to someone. "Signature" designs notwithstanding, there's plenty of room in the world to execute a design change without it rising to the level of copying someone else's work.
No one complains about John Moses Browning or Colt's Patent Firearms getting cheated by "knock-offs" made by Taurus, Kimber, SIG, S&W, Caspian or Wilson now, do they?
Makes me wonder if that's a good candidate for an EDM job...