Swap elemental mods to suit your enemies. Radiation and Corrosive are generally the preferable types due to their innate armor penetration, maximizing your one-shotting potential. Viral+Heat has superior sustained DPS, but Armor is generally a bigger issue for that, so a Slash(Hemorrhage) build is recommended for that(not polarity compatible): https://overframe.gg/build/146995

Riven replaces [Magnum Force].
Riven stat priority: CC = CD > MS > Dmg = FR > Elemental
Assuming no external buffs.

Detailed spreadsheets on part choices can be found in my Modular Weapons Guide: https://docs.google.com/document/d/1-74HS0rFLwRxDG4wz4PBRYEnQP2mzgis9HcD7nYGhKs

Check out my other builds on my profile. Especially the "Generic" build series, which show the optimal builds for 90+% of weapons of that type.