Would someone please explain the difference between a "Webley" screw grip" as made by Webley or Webley & Scott compared to the generic trade gun action w/rib extension & 3rd bite as shown this thread. The only difference I can see is the "Webley Screw Grip" has visable threads on the spindle but I don't think the threads actually engage the rib extension. It looks to me like both actions use the same principal design of the top lever boss or the top of the spindle engaging an angled cut on the rib extension and locking it down. Does the "Webley Screw Grip" move the spindle up & down to engage the rib extension as the top lever is rotated?
I've read several articles re. the "Webley Screw Grip" but all have been vague on how it actually works.
Thanks in advance.
