My rifle had a mishap last week, it fell out of a truck onto pavement and skid for about 20 feet. Luckily, the rifle , except for a small scratch on the butt of the stock, was unharmed. The scope, however, was a different story. It took a pretty good hammering. The SF knob was ground up as was the elevation turret cover. The Butler Creek caps prevented any damage to the front of the scope. It hit hard enough to snap one of the scope rings. I figured it was toast, but everything internally seemed to function fine, which, to me, proves just how tough the Viper series of scopes really is. I mailed the scope back to Vortex last Fri. and they received it on Mon. I have it back in my hands tonight, Thurs., as good as new. It only cost me the postage to mail it to Vortex. Checked, cleaned, and with a new objective ring, parallax knob and elevation cap, it now resides once again on my rifle. I cannot say how pleased I am with the service I received. They certainly do stand behind their product. I cannot believe just how fast they handled this for me. Hats off to the Customer Service guys at Vortex. It is, I have to say, the best in the business.