You will need professional assistance from a stock maker.
You need a trained Browning gunsmith
Shimming to change the comb is tricky business. Recommend you contact the Browning Service center for advise. Use the link below for your convenience.
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.
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.
Depends on what application it was ported for and by what process.
Browning does not make an A bolt shotgun, they sell an A bolty rifle
Your Browning auto-5 shotgun with the prefix of 70s to the serial number identifies that your shotgun was made in Belgium for Browning in the year 1970.
Your Browning sweet sixteen shotgun was made by FN of belguim for Browning in the year 1951.