A very long story, but I'll try and make a shorter summation. I tried to purchase a Hikmicro Alpex 4k LRF from this UK establishment and they took my money and then I filled out the )(#*$)(* paperwork to receive an NV/thermal device to have them receive the documentation - snail mail only - and then tell me Hikmicro forbids sales to the US! So now they have my money and I see that they sell Thermtec - a thermal scope that also is not sold in the US that I have looked at for a while as well as the Hikmicro. So I ask if they have any certain models coming in that are not on the website and can they sell them to me. They answered by saying they have a couple of "demo" units coming in at a large discount. Unfortunately, I'm a sucker for any "large discount" - which I think comes with age LOL - so I asked the model and they said the Thermtec Vidar 650 L. It is a 640k unit with a sub 25 netd and the best part of it is the "auto LRF" which will auto"magically" auto range with your BC profile to the hottest signal you are focused on with the scope. Well that aspect of the scope had me really intrigued as I have owned and used many of the current offerings on the market now and they all require some "hands on" to range and set the range before firing the weapon. This did it all for me. Here is the video of the first kill. It took me a couple of hours to get it sighted in the other day, but it was more to me figuring out how it all worked and they applying the "lessons learned" technique to my sighting in at the range. I will say that a 640k scope is a helluva lot easier than a 384k scope! Once I got it to where I was happy, this was the first night I had to take it for a real spin. Below is the gun with the scope attached. It's a @zx10wall tuned Uragen .25 using 30g H&N Baracudas. I have to say that so far the scope has really impressed me. The real test will be slaughtering many rats on a night outing!