We all saw how Luffy activated that Gear Second Armament technique in order to use the Red Hawk against Hody. If he could do that with one of his arms, he could possibly cover his entire body in Armament Haki while he's in Gear Second. Then Luffy would be covered in an aura of fire, making his attacks even stronger and giving him the slight appearance of a super saiyan and possibly the use of the Red Hawk Gatling that everyone wants to see.
Is it possible that he could do this and actually show it as the series progress if so how strong would he be?
Is it possible that he could do this and actually show it as the series progress if so how strong would he be?