Thanks for that.
The two i have have been modified quite a bit.
The top one now has a removable shoulder stock. By making a more compact sight mount and moving everything back I was able to increase the draw length whilst shortening the rails slightly, so with the stock removed it now fits in an 800mm tactical bag.
It has a windage adjustable flip up peep sight at the rear and a pin front sight which is adjustable for elavation and which also has course windage adjustment.
I have found this to be extremely accurate - I am shooting 1" spinning airgun targets out to 20 yds.
As some of those old posts mention, the rifle format removes virtually all the variables from the aiming and loosing equation.