How rare are Implant Circuitry Mk. III components?

How rare are Implant Circuitry Mk. III components? - Green Computer Circuit Board

I've just reached Gateway Bravo in The Surge 2, so I'm a decent ways into the game. Most of my gear is now at Mk. V or better, except for my implants. Those are still on Mk. II, since I have only found a single Mk. III Implant Circuity component thus far. Is this intended, and I'll be finding more later? It's a tad frustrating to only be able to stack 3 healing injections this far into the game.






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Circuit diagram - Simple circuits | Electricity and Circuits | Don't Memorise




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