Need help identifying Ruger Mk I Optic

[mreed911]

Picked up a 1960 Ruger Mk I with an interesting optic on it. No batteries, all gathered-light and prisms, with a green crosshair projected in it. The crosshair is generated by a detachable tube that mounts on the side of the optic, suggesting there may have been multiple tubes available for different projections.

Any pointers appreciated!

 

[mreed911]

RugerForum to the rescue: Thomson/Center Insta-Sight

TC Insta-Sight: A Lightweight Solution for Competition Shooters

Discover the TC Insta-Sight, a lightweight collimator sight designed for competition shooters, offering precision without traditional iron sights.

zco.world

 

[Belt Fed]

RugerForum to the rescue: Thomson/Center Insta-Sight

TC Insta-Sight: A Lightweight Solution for Competition Shooters

Discover the TC Insta-Sight, a lightweight collimator sight designed for competition shooters, offering precision without traditional iron sights.

zco.world

I was just about to say that

 

[mreed911]

Same joke here I made there - now that this is solved, I'm off to pick the cerakote colors, find some G10 grips, see who can thread the barrel and look for a forced-reset trigger.