just select wich 1 u want 2 use (under the SC 20K section in the inventory) and fire it
with the left trigger. the ring airfoil round will ko an enemy with 1 round to the head or
2 anywhere else. the sticky cam/ distraction cam can be used to look around or ko an enemy
if u hit him in the head. the distraction cam can be used the same way but can attract
enemies with a clicking noise and ko them with gas.