After some google searching, I have a feeling its probably a mid 80's version.
I also assume its a mk3 version as it has a metal trigger and the front sight is like the HW with interchangeable elements.
would this be correct?
Mk1 Plastic Trigger
Mk2 Metal Trigger
Mk3 Metal Trigger with Element style front sight.
Was there a Mk4? I could do with a History lesson on the 124 if anyone can help?