Harry,
Same to you.... And I presume you're right there - I sometimes even wonder as to whether they used any plans at all when making these actions. FWIW, I do know of someone who used to make a few copies of the Field and still has all the tooling for it. Don't know as to whether he made any plans, but I do know he reverse-engineered his action from an original one. The guy lives in SA, and the only occasion I had to purchase on of these, I stupidly let it go :-(
Still, he says he does intend to resume production - when he's retired.
