Singularity weaponry, tbh, most likely isn't built for fully automatic fire. Especially ones that don't primarily utilise FRME and INSL
Chances are that the supposed misfires might actually just be due to the target heating up. When the target heats up enough, the projectiles take longer to cool down, functioning more or less like timed explosive rounds. Not only that, but the molten sing does blend in well with molten metal, so while it may appear that the gun's misfiring, it's actually still firing, but it needs time to cool down, which is where the cooling laser below the barrel comes in.
I've adjusted it so that the air's off. This should prevent further deviation from the shots. As for misfiring, I don't quite see how that's possible. If you mean that, upon firing fully auto, projectiles deviate from their flight path / trajectory, the air being off should now prevent that. I'll keep tweaking it until it's as good as it can be.
I'd love to hear feedback on this if possible.