I'm talking about the new advanced Hakis. If he could do Red Hawk before, he could do Red Roc.
Red Hawk = Red Roc
Hawk Gatling = Roc Gatling
Hawk Bullet/Pistol = Roc Gun
Though he still hasn't shown the "Hawk Pistol" it should be just a non-twisted version of Hawk Rifle he used vs. Chinjao.
Ok, so "Red" Hawk/Roc is clearly the fire application with CoA/AdCoA (doesn't matter).
"Hawk" was definitely a CoA upgrade for "Jet" post timeskip. This makes sense because he also uses Hawk Gatling I believe against Monet. Plus Hawk Rifle is also not on fire here, so it supports "Red" being related.
But "Roc" is what is confusing here. I think it might actually be a combo of Gear 2/3 because:
- Roc is a bigger, ancient bird.
- Luffy's Roc Gun was as big as Kaido's face
- Elephant Gun already exists as a CoA G3 variant.
This would mean Red Roc is a CoA/AdCoA G2/G3 variant of Red Hawk. To me, Luffy can only do the fire moves with enough speed, thus is why things like "Red Elephant" do not exist.
Roc Gun is G2/G3 without the fire.