Ernesto

I'm happy to send you the engineering drawings of the missing small plunger, button and assist springs I prepared for George as PDF's.

Only problem I'm pretty sure they are still on my home computer, and not on my memory stick... I'm working on prototype vehicle production in Japan for another month.

I prepared those drawings as part of 3D CAD modelling the entire ZKK pop-up rear sight assembly, I started on the other parts before I left Australia.

In taking the measurements and looking at the design, it is obvious a LOT of special tooling and jigs were used for their producion back in the day.

The only way to economically reproduce them these days would be to do it yourself over several weeks or via a 5 axis CNC milling process... particularly the recess that the peep sight drops into, a lot more intricate than it looks at first glance.

An improvement would be to make the windage and elevation click adjustable instead of the rather arbitrary factory set screw and friction drive arrangement.

Still I like a (reverse) engineering challenge and will eventually finish the parts off and then tackle 3D modelling the receiver recess too!

Happy to share the results with other ZKK Brnophiles, but to paraphrase Captain Oates "I may be some time"

Try www.photobucket.com for a free, easy to use image storage facility.

Cheers

TM