There is a Mossberg Collector'sAssociation and at least one book on the history of Mossberg has been written. Either might help you.
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You can contact Vic Havlin of the Mossberg Collector's Association through his website at Havlin Sales. There are a number of fellow Mossberg addicts out there. The 151M was made in 1946-1947, when the model changed to 151M(a), and later, (b) and (c). Production of the 151M(c) ended in 1958.
@ $150- $250 depending on condition.
50-156 USD or so
Do a Google search for Epix Mossberg Models. There is some collector interest in the 151M and related period Mossbergs. Values will depend on condition and completeness, but can range from $100-250.
There are 2 different Mossberg 151's- the 151M (wood goes all the way to the muzzle) and the 151K (wood does not go all the way to the muzzle, but stops with a rounded bump- called a Schnabel) There is collector interest in both, the 151M is usually worth a few dollars more. Value will depend on condition and completeness (rear sights and Mossberg sling swivels are pricey to replace if missing) Value may range from $125 to $250 for a minty specimen.
$50-250, depending on condition.
About $100-175, depending on condition, finish, etc.
There are dozens of different models of the Mossberg 22 rifle. You did not tell us which model, and we need that to give you an answer. Sorry.
there is no listing for a 251c long rifle in the mossberg section of the 30 edition blue book of gun values. the latest one on the market .
50-100 or so
Anywhere from $100-$150, depending on condition. Out of production for a few years, but a durable, reliable accurate hunting grade .22 rifle. Great little plinker.
Do you mean "what is an automatic Rifle". Any rifle that keeps firing as long as you hold the trigger down is an automatic rifle. It will only stop when you let go of the trigger or run out of bullets
I believe the Westernfield rifle was made by Mossberg, and is the Mossberg Mdl 353. Magazines are available from Havlin Sales. You can order through their website, or send them an email. Very nice people to deal with for anything Mossberg.