You have seen that snipers zoom on when you left click the sniper gun. My idea is that When you attach the attachment "Iron Sights" to your gun, when you left click, you will zoom. Zooming in will only zoom in 80% of a sniper's scope though. Zooming will also make you 70% slower, and make you 20% more accurate, adding on to the hipfire/crouching accuracy. The icon for this attachment would be a tripwire hook. This could be a good attachment preventing us from straining our eyes to shoot a target withour m16 and waste 30 ammo.