Thanks, Thunderbox - another tiny gap in my horrendously miniscule knowledge base plugged . I didn't know that BSA was so spread out over Birmingham, or that its capacity would have been able to handle so many FTRs. Maybe these rifles are not as uncommon as I think - they just may not have surfaced yet in great numbers, which would make sense as it wasn't too long ago that Enfield scholars weren't even aware there was an FTR program at BSA in the 50's...