@curlyhairedboy, here's a new video, showing compression lock manipulation in different ways, opening action pushbutton and lightswitch style with various methods with both hands, and detent-free flipper action against gravity with my weak hand for good measure haha.
As for thicknesses along the spine,
.138" at the ricasso
.132" just in front of the ricasso where the grind starts
.126" about halfway
.1" around where the belly is
And it's .027" just behind the edge.
Keep in mind that all my measurements are rough, likely taken with improper technique on the calipers (sloped surfaces and edges and all that).
Here's a spine shot for reference (Amalgam in the middle, Manix on top, PM2 on the bottom):