Can there be RFID chips cum killer chips in a imported weapons?

You know karan, I have often wondered what lurks deep inside these computers with components from all over Asia.

Not sure about your "killer" inference, but they're used to identify whatever you want to tag. My three cats have them. Under the skin between the shoulders. They can be identified by vets here in town.

Presumably they could identify a particular production lot of ammunition in the event of quality/reliability issues.

I'll answer the question with a firm 'maybe'.