LeFusil, Spot on.
Frederick Beesley made most of Lancaster's boxlock actions and arguably the backaction sidelocks too: they both use the 'wrist-breaker' action that cocks the mainsprings on closing.
Having had to deal with quite a few of these actions, I would strongly advise against ever buying one that is not functioning properly, they can be a total nightmare.
Some use a over-centre type ejector that was patented to get round the Southgate patent and the spring looks like a snail on acid. As a restorer, I would avoid this system at all costs unless one enjoys doing ejector conversions!
Nowadays, I tend to avoid any contact with the Lancaster wrist-breakers. They are beautifully made guns and highly reliable until someone who doesn't understand them 'regulates' one!
