The sn indicates it was made in 1993
YOu will have to call Browning for the decade.
Your serial number suffix of M72 indicates that your rifle was made in the year 1972.
22 years old
15-16 years old
Browning's website has sn data under customer service.
It was made in the year 2000
1971
the suffix of M8 to your serial number indicates that your Browning BAR was made in the year 1968.
Browning.com has a sn function under customer service
You will have to call Browning or visit their website and look up the sn to find out.
The 3T prefix to your serial number indicates that you Browning .22 auto rifle was produced in the year 1963.