Additional comparison photos:
Slides (2023 version on the left)
Sear cages, trigger bars, etc. (2023 version on the left)
Slides - sides (2023 version at the bottom)
Paint finishes (2023 version at the bottom)
Trigger bar lifter spring - left and right. The part that gets me is that the spring on the right is pinning against the frame and not sitting in the grove. Same thing on both SP-01s. I don't think it is by design, or is it?