Weapons that use 0 Action Points per VATS shot
Guide to zeroVATS weapons
Info status: Published | Jan. 24, 2020, 4:52 p.m.
Yes, you read that right, it is possible to mod certain weapons in such way that they consume zero Action Points per shot in VATS. I have learned this from u/giant_key.
If you look upon the explanations what's hidden from in-game definitions, you'll see that certain mods reduce AP cost by percentage. For Ballistic Pistols and Rifles, the AP cost modification from turning semi weapon into automatic one is -50%. Legendary 25% mod stacks with this directly, putting the reduction at 75%. You need 25% more AP reduction from other mods, and this you can achieve by using:
Aligned barrel, any length (-5%)
Aligned or Forceful stock (-5%)
Quick or Swift Magazines (-5% each)
Reflex sights (-10%)*
When you configure this weapon like so, it will become a zeroVATS one, a gun that does not consume AP, and hence the ones capable of achieving the highest sustained DPS.
Without the legendary -25%, the lowest AP reduction that can be achieved is 75%
*The data on nukacrypt.com
suggest the reflex sights provide 15% reduction, but in my experience if you don't apply all these mods the weapon, while barely consuming any AP, will not be zeroVATS weapon.