Gentlemen, A long shot, I know, but I was wondering if anyone has a set of opens for the above OR could anyone keep an eye out at Kempton for a set on the weekend. I'd be happy to go to £30'Ish for a set.

The front sight is a dovetail fitting and the rear has 2xm3 fixing holes at 40mm pitch, with a blind 3.5mm hole for location equi-distant between the two tapped holes.