Yes, a very interesting read, I have a 600 and a 602 but couldn't tell you of the internal differences as I've never had to open them up.

As in the article, the lock button on the sidelever was introduced to stop the cocking arm flying open if your hand slipped off the grip.

As far as I can make out, the 600 series never came with a case, they were just sent out in a cardboard box.




All the best Mick