Depends on the type of Pulse or Scout. It does add a small increase in RoF, at least I've noticed it has. For instance, The Villainy with full auto is decent, but not the best. It's a slow hard-hitting Pulse Rifle, which means you're gonna have to get in all the hits to kill em. Hawksaw or Grasp of Malok does full auto better though. Mid to high RoF pulses will make good work of full auto. Small impact, but decent enough fire rate to get the kill on time. Scouts on the other hand with full auto are very useful. Take the NLX Shadow scout for example. It's like a legendary Mida. Fast firing, decent impact, big mag for a scout. With the small increase to RoF that full auto gives, that makes the NLX Shadow great. Pair it up with Firefly or Outlaw, and you've got a ramming machine. But full auto on Colovance's Duty...isn't so good though. :/ Very slow RoF, even with high impact full auto doesn't really grant it enough merit for quick TTK. Even with the small RoF increase, it still doesn't kill fast enough. I'd save it for using it in a sniper hallway with a lot of activity going on. So in conclusion, Full Auto is a good perk but it's really meant for high RoF guns.