When I am undetected and at full AP I CANT USE VATS with this gun!

Do I need to put some points into some skill that raises my AP so I can use it out of combat?

Which skill and how many points. Anyone know?

cause its a great gun but i wanna also do sneaky kills with it!

Also how the hell do you use the crit function? everytime i see it flashing i hit space bar but all that happens is my char jumps in the air. Can't shoot while jumping!

Not sure about the first part but crits can only occur in vats. You apply a shot then before it is fired you hit space to turn it into a critical shot

ah ok, thanks. I must just be timing it wrong.

Yea, it's a pain when you get it all lined up and then can't quite get the crit off before it fires. you gotta be ready on that space bar.

Ya use 7 agility, it takes your entire bar but gets like 95% headshot chanse at long range.

From what I can tell an activated crit in vats has 100% hit chance. Crits outside of vats are random but accuracy is entirely in the players hands.

I am on Xone so after hitting the trigger in Vats all I have to do is hit A followed right away by the X. Works every time for me.

no it just raises the % it doesn't make it always hit, their are legendary items that increase your accuracy on criticle hits

Ah thanks, it's a great gun but that's gonna take me to lv32. By thats time maybe something better is available... hmm cause i havent been grinding AG just luck, intelligence and perception.

Next play through I might try a pure sniper , maybe with hacking and lockpicking i dunno something different tho

I have never missed a critical hit shot in vats, not ever. Now, I do not use it as often as other people maybe but I am pretty sure a crit shot in vats always hits. Any items with increased crit % is for regular shots not in vats.