Here is an interesting Naval Trainer I picked up today. A couple of things that are intersting is the low # serial number ( 5) , and that so many parts are numbered to the receiver. I had heard these were rushed out, and they often skipped serializing the parts. Also found out that the cleaning rod is faux rod. It is only about 2 inches long. I thought I might have broken the cleaning rod so I look down the channel, and it was only about 1 1/2" deep.