Don't recommend you attempt this unless you are a Browning factory trained technician.
Weight of the weapon.
"BLR" = Browning Lever Rifle It is lever operated
You will have to call Browning to find out.
You find a Browning trained armorer
You will have to call Browning.
Browning Lever Rifle
1992
The 2 letters NR in the middle of your serial number indicate that your Browning model BLR rifle was produced in the year 1997
Call Browning with the serial number.
1992
60-600 usd
1971