Long Tang Flat Knob
You will have to call Browning to find out.
Magnum
It stands for Modified choke.
It is the model name of the first Over/under shotgun that Browning made. "Superposed" in the dictionary means "one on top or over another".
what is a Browning Ranger Repeting Shotgun
It depends on the browning model of shotgun you are asking about,and the condition it is in.
if you are asking about a browning auto-5 shotgun?The year of production of your browning shotgun is 1928.
You will have to call Browning.
Go to Browning's site, click on Support then date your firearm.
If you mean a Browning B-2000 12 gauge shotgun then the value would be 495 dollars for a shotgun in the condition you describe.
John Browning invented the pump shotgun in the year 1897.
I would like to start first with the serial number.The letters MR in the middle of the serial number indicates that your browning shotgun was made in 2007.With that said,if you have a pump shotgun then you have a browning BPS.If you have a over/under shotgun then you have a browning citori.If you have a semi-auto shotgun then you have a browning gold model.