Things I liked: duel set of lockdown ring screws really keep the scope from shifting... Very light, but also strong to withstand heavy recoil from magnum springer air rifles.
Things I would have changed: Including shims to elevate scope at the rear ring for break barrel air rifles would be nice. Use better steel for the allen head screws.
What others should know: Over tightening the ring and base screws can strip the allen hex screw head which appear to be made from soft steel.
Things I liked: Really keeps the scope from shifting.
Things I would have changed: Nothing....
What others should know: Works best with the lowest rings you can find... I recommend the B-Square Low Sport Utility Rings, which have a double set of scope lockdown screws.