Weapon light cover - Butler Creek Blizzard See Thru Spotting Scope Covers

I purchased this to protect the bezel on a Surefire Intelibeam light I had just installed on my AR. I had to mount the light pretty far forward on the hand rail that the bezel was close to the muzzle break. I was concerned the bezel would get damaged from any muzzle debris so I added this cover that doesn't have to be opened. I could keep it closed at the range, it would still let enough light thru closed if I forgot to opened it in a emergency. If it doesn't get hit with any debris from the muzzle I will remove it. I know its not the intended use but I wanted to protect my $200 + light.