FX shows that they are able to innovate not just within airguns themselves, but in other areas of the shooting sports. The FX No Limit scope rings are a perfect for longer range shooting as you can vertical adjust and angle your mounts so you can always find the sweet spot on your scope. it's a brilliant concept that is simply executed. The vertical adjustment will shift just over 4 yards at 100 yards. You?ll never want standard scope mounts again!