p15camborne: Interesting - My 1991 BLR does not have a folding hammer and, according to my factory service manual for BLRs, should not. Perhaps someone added it on to yours in the past? Anyhow, does the hammer extension interfere with the folding safety feature of the hammer when it is in the half-cocked position?
Browning's web site states that hammer extensions can't be used on the folding hammer models.
coyotetrapper1928 - I don't have a post 1995 BLR nor a service manual for one, but your question is an interesting one. My gut feeling is that an exchange would be possible, though I do not know for a fact. A side-by-side comparison might answer your question.
pagris
1977 .358 BLR
1980 .358 BLR - original owner
1987 .243 '81 BLR
1991 7mm-08 '81 BLR