Again there is the technological progression from left to right needed to play an X-Com campaign.
And here the progression with the snipers. As there are not SM snipers I quickly scratch build one. I wanted a BFG able to pierce even tank armour, but I am afraid I put a rather long barrel, don't you think? LOL! I think I will shorten it a little bit. I used an Orc gun to make the sniper rifle; the rest is a SM scope and plastic bits.