Can Someone guess these items?

[tanks4fun]

i have found these items and told they came out of a m728 combat engineer tank, im trying to figure out what they are called, and what do they do? also is it legal to sell? and whts the price range on them?

 

[STURM]

They appear to be optics, as you probably would have already guessed. I can't think of any reason why these would be illegal to sell.