Y and Z Modes

[WarpedKid02]

Hey, does anyone no exactly what these modes are?? I put it on Z just to see what it was and it was like semi, semi, 3 shot burst???? Didn't understand it. Thanks

[CAZ]

junk if you ask me, why shoot anything but semi. fastest rof shooting semi so why hinder the speed for ease?

[ctjz28]

I have Y unlocked on mine and its fun to play around w/ but its true you can shoot faster on the normal b mode.