Another quality product from Vortex. For the price, Vortex offers some of the best quality glass on the market. The Crossfire works well. We put the 3.5 x 10 power scope on a .17 HMR and it works very well. Even at low light the Crossfire performs well. You can tell a difference during mid day at long distances -- especially while prairie dog hunting on a hot day. The rising heat causes more blurriness than the Diamondback or Viper scopes. But still, for the money, this scope is a tremendous value.