Hawke sent me the scope below as a replacement for one that was shaken loose by my R1.
It is a great scope and I am going to put it on my 1720T pistol when I get around to it.
It would be great on your air force rifle if....it is not a springer.
Springers should have 30mm tubes as recommended by Hawke.
You may be able to find this scope at a lower price if you look around.