[Suhiir]

The original M4, with just iron sights, while it can certainly shoot further has an "effective" engagement range of about 200m. While you can, if you have the luxury of lining up the perfect shot, hit at greater ranges chances are you won't.

Same applies to the original M16 with iron sights, about 400m is the best you can expect.

As game standards SMGs have a range of 100-150m, carbines 2-300m, smaller caliber assault rifles 400m, battle rifles 500m, sniper rifles 750m.

WinSPMBT is not a simulation, it's a game, thus many things are less, and sometimes more, effective then they are real life because in the game an assault rifle is an assault rifle is an assault rifle. It doesn't matter if it's an M16, AK47, FAMAS, SA80, G36, etc.