Let a gunsmith do it.
Highly recommend you ask a gunsmith for assistance.
Weight of the weapon.
"BLR" = Browning Lever Rifle It is lever operated
HIghly recommend you leave this to a trained gunmsith.
You will have to call Browning to find out.
You find a Browning trained armorer
You will have to call Browning.
Browning Lever Rifle
You can't. If you need to disassemble the BLR (provided it's not a take-down model), you have to send it back to the factory. If you're just looking for the parts and owner's manual, go to media.browning.com/pdf/om/blr_02_262_om_s.pdf and download a copy.
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