But it wasn't. A 3mm threaded hole taped into ally? There was no way of increasing the size of the hole because of the lock up. We have a few engineers and mechanics in the club and everyone who looked at it commented on its poor design.
Im no expert - Ive only been shooting match pistols over 10 years - but sights on a match pistol , any make of match pistol are very important.
'Yes I was there' ???? What? At Rivington Riflemen when this happened?
Ive never owned a 604 so dont know about any flaws so I wont comment on that. I have owned a 6004 for a very short period and it was cr*p.