Hi, and welcome. If you have the 3rd edition of the SCSW, you'll notice in the serial number tables that the BRF prefix shipped in August 1994, so I think it is safe to reason that your gun was from around that time, give or take a few months in either direction.
The factory never looks to ship in order of SN, so yours may have been made and pushed to the back of a shelf while "newer" guns went out first. An imprecise science to say the least.