Truthfully, the TAQ-56 is usually the best choice but buffs to the Lachmann-556's effective range at the start of Season 3 Reloaded have made it at least worth considering. Much like the TAQ, the 556 is an extremely accurate assault rifle that beams at about any range.
Kastov 762\n\n In fact, it has the highest damage per shot of any Assault Rifle in the game. Players should use their attachment slots to mitigate the Kastov 762's high recoil, but once they do they'll find it to be a powerful and reliable weapon, well-suited for mid-range encounters.