100-1000 depending on who made it and the condition it is in.
You have a 20ga Magnum made in 1969. Value depends on condition. Use the link below to find your gun in the Blue Book of Gun Values.
75-200 USD depending on condition.
$500-600, depending on condition and caliber.
100-400 USD
50-500 usd
0-500 usd
75-300 or so depending on specifics
Yes Marln made a 22 mag auto loder model 922
50-100
No
Yes, as long as the stock is for the full-size frame. Stocks from the 20ga, 28ga or .410 will not fit on the SuperMag.
your browning model auto-5 shotgun is valued at between 375-650 dollars.