What Is A Gomu Gomu no Jet Gatling

Gomu Gomu no Jet Gatling (ゴムゴムのＪＥＴ銃乱打（ガトリング） Gomu Gomu no Jetto Gatoringu?, literally meaning "Rubber Rubber Jet Gatling")

This is one of Luffy's strongest techniques. Luffy stands still, bends forward and moves his arms upwards at speeds which they can no longer be seen, leaving only jet streams in their place, very much like how the Jet Pistol looks.

This results in an effect comparable to Foxy's Kyuubi Rush, except that Luffy does not need to make use of Noro Noro photons to slow down his target in order to accumulate the hits. The hits land so fast that, after a volley, they seemingly connect simultaneously. The circles of air bursts from the punches surrounding Luffy, resemble the many barrels of an actual Gatling gun. However, due to the large amount of energy it uses, Luffy cannot sustain it for long, although the time it is used is longer than the regular Gatling.

 During his fight against the combined efforts of Marigold and Sandersonia, Luffy demonstrated an omnidirectional version of this move by falling on his back, then, while lying down, launches a rapid barrage of powerful high-speed punches from the ground, effectively nullifying both sister's attacks.[8] In the Viz Manga and FUNimation dub, this is called Gum-Gum Jet Gatling.

What Is a Gomu Gomu No Red Hawk

Gomu Gomu no Red Hawk (ゴムゴムの火拳銃（レッドホーク） Gomu Gomu no Reddo Hōku, literally meaning "Rubber Rubber Fire Pistol")

A Haki enhanced version of Gomu Gomu no Jet Bullet. After entering Gear Second, Luffy uses Busoshoku Haki to harden his arm. He then stretches it back like Gomu Gomu no Bullet. Though when cocked back, his arm ignites, releasing a stream of fire.

When the attack hits, it creates a fiery explosion even underwater and deals immense damage. The Redhawk is a type of revolver, and the kanji name of this attack pays tribute to Ace's Hiken (火拳銃 means both "Fire Pistol" and "Fire Fist Gun"); the anime furthers this tribute by showing a flash of Ace when Luffy used this technique. This was first used against Hody Jones in his transformed state after the air bubble engulfed Noah.[17] In Funimation subs, this is called Gum-Gum Red Hawk, while in the Viz Manga it is called Gum-Gum Fire-Fist Pistol Red Hawk.

Gomu Gomu no Mi/Gear Second Techniques

Gomu Gomu no Mi/Gear Second Techniques is a power in Luffi. This technique involves Luffy speeding up the bloodflow in all or selected body parts, in order to provide them with more oxygen and nutrients thus making him much faster and stronger. 

The Gear Second technique uses even more oxygen and energy, using up more food and causing Luffy to pant heavily. The increase in his metabolism causes him to be hungrier than usual or even have a paralysis type effect after prolonged use of it, like in the second fight with Rob Lucci, where Luffy was only able to lie on the floor. Lucci, one of the first of Luffy's opponents to witness it, compares the process to doping.

Japanese Name:	ギア2（セカンド）
Romanized Name:	Gia Sekando
English Name:	Gear Two (Viz), Gear Second (FUNimation dub), Second Gear (Simulcast subs)
Literal Meaning:	Gear Second
User(s):	Monkey D. Luffy
Fighting Style Focus:	Fists, Rubber body, Imperceivable speed movement, Haki
First Appearance:	Chapter 387; Episode 272

Doping is adding more red blood cells to the body part/s, which in turn allows for greater delivery of oxygen and nutrients to the body part/s. In Luffy's case, his organs and blood vessels are made of rubber allowing them to expand and contract at greater rates without tearing. Essentially Luffy increases the blood flow by forcing more blood through his blood vessels thus increase his fighting ability. This mode's enhancements to Luffy's physiology give him the ability to use a new, stronger set of techniques which are generally the same as his old ones, but are so fast that even a skilled assassin would have a hard time actually seeing them. This is called Gear Two in the Viz Manga, Second Gear in the Official Simulcast subs, and Gear Second in the FUNimation dub.