This is a lazy build for people who don't like running primed faction mods (like myself :P)
You should all know this by now but faction mods a lá Primed Smite Grineer increase your damage to that faction by a jaw-dropping amount. I'm not explaining the maths here but the basic gist is that when you've already squeezed all the bonus damage you can out of multishot, crits and Serration, Primed Smites will "triple-dip" and give you a ridiculous increase to final damage calculations.
So for endgame content, faction mods are a huge boon for damage output. However, they're expensive as balls, only available occasionally and you need one for every faction you plan on running the build against. And you gotta change mods for every mission. And that's really really annoying.
This build thrives on getting a bunch of crits and headshots and whatnot. This is a gundition overload setup: your shots come out fast, have good status chance and apply three different statuses. Kill two enemies and Galv Aptitude/Chamber will give you like +300% direct damage on any enemy with three statuses on em. Crit Delay is insane and busted, [Shred] offsets the fire rate decrease and lets you punch through hordes, and [Stabilizer] makes it easier to land more of your burst on skulls.
Substitute [Primed Stabilizer] and [Shred] for their regular counterparts if necessary. Primary Crux is a cheaper alternative to Deadhead if you're not up to Steel Path yet. [Hammer Shot] is hell on earth to pull, if you like you can just smack [High Voltage] on it and call it a day. 👍