Slight modification from Quelkaima's https://overframe.gg/build/362523/laetum/ghs-archon-killer-pistol/ build. Since I am actively avoiding criticals for the DA procs I swapped [Primed Target Cracker] for [Primed Heated Charge] and have been enjoying it. I also swapped [Anemic Agility] for [Gunslinger] as i haven't noticed a negative to the damage for the fire rate. Works fantastically well on SP and just instantly clears rooms.
Evolution II: Marksman's Hand (-40% recoil)
Evolution III: Lethal Rearmament (+30% reload speed for 12s on headshot. Stacks up to 3x)
Evolution IV: Incarnon Efficiency (50% bonus charge on headshots)
Evolution V: Devouring Attrition (50% chance to deal +2000% damage on non-critical hits)