[Glenn Hancock]

I've got a 1920 model Titan that my Grandfather gave me a few years back. I've started shooting skeet with it and I'd like to give it a good cleaning. My first problem is I'm not sure how the barrels come off. It has a pin holding it but its not wanting to slide out easily and didn't want to beat on it until someone could tell me the proper way to remove the pin?

Also, is there a video or instructions on how to properly clean the gun? I'm more than certain that it hasn't had a good cleaning in a very long time.

Thanks,

Glenn