You can replace [Venomous Clip] with [Electrified Barrel], and switch the mods around to get corrosive.
The entire point of this build is to get 100% status chance. If you lack [Hypothermic Shell], you can use [Modified Munitions] to get the 60% status chance and it will still do excellent damage against enemies.
We use [Magazine Extension] because the reload rate is so fast that extending the rounds gives you much more DPS. We do not use automatic trigger because the fire rate is 9.09 (in-game stats) which is more than enough. You do more sustained damage with this setup than with another 60% fire-rate bonus which helps against bigger targets.
Make sure you're using Amesha, my guide with basic tips here: https://overframe.gg/build/12277/
If you want to use Imperator Vandal instead which does damage slightly faster, check out my guide here: https://overframe.gg/build/12279/
Tips:
Aim at enemy weakspots. This is usually the bright glowing part of the engine. This goes for every ship as their armor increases significantly later on.
Three ways to destroy a crewship:
Go inside, hack reactor shields, shoot reactor so it blows up and starts the countdown. The loot then drops 5 seconds after the ship "disappears" due to reactor detonation. If you stay on the ship until it explodes, don't move. The loot actually drops from the position you spawn. You'll see the loot spawn and collect instantly.
Go inside, hack reactor shields, shoot reactor, then someone with this weapon (for example) shoots the crewship until it has 0 hp from the outside (takes 2-3 seconds, you can pre-armor strip but not bring the HP to 0 prior). For some reason you need to leave it at above 0 hp before reactor is destroyed to complete the kill from the outside. You also need to shoot the body of the ship and not the engines since they become invulnerable. This method will drop the loot instantly instead of having to wait 5 seconds for it to appear because the ship destroyed instead of reactor detonation. This can be buggy if you do it solo. One bug is that the ship "resets" another is the ship becomes "invulnerable" during the countdown.
Strip the crewship armor with this gun, then someone in the RJ should shoot the crewship with the Forward Artillery (uses dome charges). This will 100% one shot the crew ship and drop the loot immediately.
Remember, both this weapon and the [Imperator Vandal] work because they can strip the armor using status, then deal shit tons of damage once the armor is down.