[2019] Please add new optics system for attackers

Originally posted by dont_ask_me_again: You can have acog + whatever of the other 3 sights fitted then you can flip between x1 and x2.5.

See ELCAN LDS Ubi.

Either this or remove the zoom around acogs.

Thanks for the suggestion! There has been a few mentions of suggested attachment changes we have taken note of.