vbull,
You can get them here :
http://www.waffencenter-gotha.de/sho...947462ac024256
How you get to pay these chappies at Gotha I do not know, as they only seem to accept Sofort payments (and you can't select the UK in the Sofort Banks page !).
IIRC, some chappies have done some mods to the trigger assembly etc. to do away with the 'devil bar'.
Have fun & a good Sunday,
Best regards
Russ