Yes a civilian may purchase thermal scopes. Check the link to find them.
Yes, I'm pretty sure there are such things a thermal scopes. It even says in the credits of the game, Special Thanks to the U.S. Navy seals.
CCTV, scopes, binoculars
Not physically (or physiologically), but there are a number of infrared or thermal scopes manufactured that can help you see in the thermal ranges.
you look through the scope and the players are a white shade.
Hunting rifle scopes come in a wide variety and are easy to find online. Some websites like The Scope Smith and Optics Best Buy offer hunting rifle scopes.
There are a number of different FLIR camera that have thermal imaging. In fact, all of FLIR's cameras have thermal imaging, and are used by military, police, and civilians.
The main purpose a thermal imaging scope is for either handheld or weapon-mounted sight and surveillance. The scopes can also be manufactured for night vision use.
Tactical scopes can be found at many different places. The best place to buy tactical scopes would be on Amazon. Also, bidding auction websites like eBay have a good selection.
most civilians walked but wealthy civilians would buy horses or carriages
You can buy it at Toysrus or Walmart
Gun shop, gun show.
Burris Brand Scopes make scopes for various uses. They make binocular scopes, rifle scopes, spotting scopes and tactical scopes. It is the only US based optical scopes company that has kept all production in America.