tyro

Find out what the majority of the GB U19's are using and go for that. I know of at least one person who wasnt using the "in equipment" and was dropped from the squad.

Seem to remember it was something like 3/16" BSF, I have the tap at work and can check tomorrow as I made a rail that had the fixings closer together giving better adjustment or alternatively tap out one of the existing holes something like M6 then just use a set screw through a normal bipod.

Another tidy one here http://www.fultonsofbisley.com/shop/firearms/target-rifles/639-f1575-anschutz-left-hand-tr-22.html