H-3 Nozzlenose

"Listen up squids! This here is the H-3 Nozzlenose. You want a weapon that packs a wallop and also kind of looks like a garden hose rolled up? This here’s your pick. A long interval between shots is made up for by high attack power. With the H-3 Nozzlenose, a one-hit kill is a real possibility."

- Live from Squid Research Lab

The  is a free DLC Shooter Main Weapon in Splatoon. It was released on September 12th, 2015 at.

Description
The H-3 Nozzlenose is a version of the L-3 Nozzlenose that has an increased attack power, but with a lower fire rate.

"A Nozzlenose that packs even more of a punch. A long interval between shots is made up for by high attack power, which makes splatting your opponent in one go a real possibility."

- In-Game Description

Demonstration
https://www.youtube.com/watch?v=snLm0dGFXNY

Competitive Viability
Simply put, the H-3 is too hard to use well, and even if used well still is awful. While the damage increase allowing a three hit is nice, perfect aim is required to make that happen, and with a much weaker fire rate, any missed shot is gonna equate to a quick death for you. The weapon is also horrendous in turfing, leaving it much harder to maintain map control with it. You'll also find it hard to build a special, which is unfortunately an Echolocator, a supportive special that does absolutely nothing to help out the weapon's inefficiencies. The Cherry H-3 Nozzlenose exists, which is a much better selection, or the L-3 Nozzlenose D could be used, but the regular H-3 will not get very far in competitive play.

Trivia

 * According to Sheldon, the 'H' stands for 'Heavy'.