ALL CREDIT GOES TO KnightmareFrame
https://www.youtube.com/watch?v=XZNDcA1b7ns

By the way, I use a [Helios] Companion with the Gladiator Mod Set on its melee weapon to grant me a 30% crit chance every combo multiplier so it's like 1/2 of a Maxed [Blood Rush]. Results may vary if you don't have it, as I have tested it without and I got some orange crits and some red crits.

Once you build the Zaw, level it up to Level 30, AND GO BACK TO HOK. Go to "Other Services" and on the leftmost option, it should say "Gild Zaw." GILDING MAKES YOU HAVE RED CRITS! It boosts pretty much all stats by a huge amount.

Additionally, this build is technically 1 Forma because you get a free polarization when you gild and you can name your weapon too with it.

Replace [Drifting Contact] with [Primed Reach] or something if you have the Naramon Power Spike Ability.

Replace [Fever Strike] with [Primed Fever Strike] if you have the mod (I don't). You will need an additional Forma though.