My guess is it’s probably either a tilting bolt, flapper locked or something like that and it’s not a delay mechanism in a manual action firearm because the bolt will stay locked until you cycle the action, like on a Savage 99 lever action for example, it’s a very strong lockup, yes they also use those types of systems as a delaying mechanism in semi autos but their design is not exactly the same as when used in manually operated firearms, would be nice to have a manual for the rifle, I bought one so I’ll see how it works when I get it!Most common two ways to lock a pump action 9mm are tilting or rotating bolt, or locking action/slide which is released either with trigger pull or hammer fall. Latter would require some button to unlock, former could get away without unlocking button. It is essentially a mechanical delay. I expect anything form Turkish manufacturers, but 9mm pump action without lockup sounds too extreme even for them.





















































