If your serial number is coded into your bios it will appear here on the screen. Type the command: WMIC BIOS GET SERIALNUMBER, then press enter. That amount of shells you have might turn out to be worth more than the gun. How do I look up a serial number Windows Open Command Prompt by pressing the Windows key on your keyboard and tapping the letter X. Buckshot or slugs are around a dollar each. 12 gauge birdshot is selling for around ten dollars for 25 rounds. I would not pay more for one - leaving the gun-owner of the option of keeping a case he had no use for or throwing it in for free.
They normally cost between 20 and 50 bucks new. The "cover" (a holster is for pistols), if it is just a zippered gun case, would not really add value. Having both barrels should add another 50 bucks to the "used" price. Normally if it came with both stocks, it should also have come with two barrels - one about 28 inches long and one about 20. The serial number on the Mossberg 500 is on the left side of the receiver, just below the trigger group pin. Without a picture or three, valuing the shotgun is problematical.Ī Mossberg 500 is not a very expensive shotgun, but with both the shotgun stock and the pistol grip, should be able to get three hundred, anyway.