You need to call Browning. The sn does not follow normal convention.
The RN in the middle of your serial number indicates that your Browning Hi-power was made in the year 1997.The Browning Hi-power is produced by FN in belguim.
The NR in the middle of the serial number dates your browning hi-power to the year 1997.The gun itself was made by FN of belguim.
The 72S suffix to your serial number indicates that your Browning superposed shotgun was manufactured in the year 1972,by FN of Belguim for Browning.
Call Browning
browning sweet sixteen serial number 5s43804 what year was it manufactured
This is a 9mm Hi-power manufactured in 2001 (M=0 & Z=1). You can go to the Browning website and in the Support area find a link to "Date Your Firearm".
The Browning website has fairly good year of manufacture data. Look under customer service.
2000
1976
You must call Browning to find out.
YEAR 1973
1954