On a trawl through t'internet........I spotted what looks like a complete (except forsight hood) mk 1 airsporter for sale (pics are not the best).....BUT...It looks like it may have the rare, period parker hale "sportarget" unit fitted.......possibly with a six hole iris unit.......makes the £199 asking price a bit more bearable....described as G.W.O.......Nearly tempted myself but here you go y'all........
http://www.shootingshack.com/bsa-air...and-2199-p.asp
The sale is nowt to do with me....thought it may be of interest to someone on here