Hello,
I've just acquired a nice K11 and notice every numbered part matches up EXCEPT the the rear sight which has a 3 digit number on ramp and slide matching to itself.

I've only closely examined one other K11 and it had the same number situation.
Is this the norm for K11's ?

I also have a K31 and think I may be getting addicted to Swissicon Rifles. What books should I get?

Thanks for any help you can give.

Regards,
Bob Gold
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