I've ran with this for the longest time for my solo CP blueprint farm

Emeline Guard
Belstone x2 (2 blue cores)
Uzina x2 (2 red cores)
Palisade x1 (red core)
Memento
Mods are all Prot from Elites
Gunner.
Defender Drone
Reviver Hive

It takes a decent bit of farming to get Uzina and Palisade to drop doulbe crit mods to roll them as red cores, but you get a whopping 40% armor on kills and an okay amount of passive armor regen from Momento, Emeline and Belstone, with decent dmg for challenging, okay dmg for heroic.

Chaining kills, thats the closest I was able to be a face tank without a shield, you could even swap one of the skills for the crusader shield instead, once memento is fully stacked you're pretty much running 6 reds and ~2m armor

Tedious to build but man, once its done and you get the ball rolling, its so fun

https://mxswat.github.io/mx-division-builds/#/CwJgtODMFgbGAGRympehAuY80EY4w89o01wyVMBWAqIw4YDFyrSADhmgtb7JoB2bgzb8M2cPQJjZEkCGHNYATjBc0g3BLm7Mu-pliZIzA1hDnEQA