BillM is correct,It is a Savage 520.It looks like yours needs a little TLC,but these are great old shotguns.It is also a takedown gun,pull the slide back and turn the magazine tube to release the cam lock in the bottom of the receiver. Then wiggle the action arm loose from the bolt,and slide the forearm assembly forward. Hold the receiver/buttstock in one hand and push straight down on the barrel right in front of the receiver,and the gun should come apart.
If the gun has been dry fired,you will not be able to cycle the slide until you put forward pressure on the slide to release the bolt locking mechanism.
Last edited by Txhillbilly; 12-16-2009 at 03:26 AM.