I received the Horizon today and as soon as I opened the box I got kinda ill because, as I said in the previous post Optronics told me they have one piece tubes, but nope, its two...it is actually crystal clear but easily fogged externally with my breath, I added some "pink stuff" (anti fog, water repeller) that I get at the eye doctors, grabbed two buckets and a quick stop by the freezer for some ice I headed to the bathroom. I filled one bucket with ice water and let the hot water steam up and set the other bucket under it allowing it to fill up and continuously overflow so it would no doubt stay hot, with a pair of tongs I alternated between the buckets for 30 seconds each for five minutes and the Optronics Buckridge Horizon 3x-9x 40mm silver finish actually passed the first test....the eye relief varies dramatically across the power range but at 5x(which is optimal magnification for night time on a 40mm scope) it is actually quite comfortable. The scope transmits light exceptionally well for a $50.00 scope and the finger adjustment knobs was a thrill to use during bore-sighting. Tomorrow I will test for shock :twisted: