No threads ....so it is not an screw treble grip but a type of "hidden" rib extension third fastener (as seen on other Webley's - no bolt protrudes out of the action- a bar goes across and securely locks the rib extension in place.

But my point was that this is not specifically a copy of the Webley 700 because that model never had a rib extension with a third bite and no additional screw in the top lever either - also still don't know why the screw on the tang is off to the side.

Last edited by LuisHunter1; 01/24/14 05:52 PM.