This is I believe an older gun it doesn't say anything on the barrel but "made in usa 20 ga. choke" It has a 30 inch barrel and shoots like it is full choke. the receiver is silver color maybe nickeled and the trigger guard is plum colored, it has been reblued. It belonged to a young man who got it from his grandfather, had it reblued and never picked it up from the shop. I had the gun restocked because there was no wood with it when I bought it. It does have a serial number on the receiver. The number is J 51xxx. I believe it is a 2 and 3/4 inch chamber but just want to be sure. I have several boxes of 3 inch lead loads I would like to shoot but don't want to mess up a good gun.