Yes
They should not be.
Yes
Check the receiver and barrel
Marked on the barrel.
Located on the barrel or receiver.
Check the barrel and receiver.
It will be marked on the receiver/barrel.
The markings on the receiver and barrel will tell.
Look on the barrel/receiver and it will tell you.
Check the barrel and receiver.
Serial number on a Citori is under the breakdown lever on the receiver. It should also be stamped on the barrel where it locks up on the receiver.
Check the receiver, barrel