Dr Martin, (oops, Freudian slip..no bovver,lol)
So that looks like a wee screw for sure, but as you said, on the other side.
So does that mean the gun your getting has lost its screw, it would seem so ?
You'd think that would make something not work properly...
Hope its nothing major...those Hortons look like nice guns..
thank you for those e pics
& hope its a keeper mate,
cheers
franc