SMG-34 Ninja

A silenced, compact, automatic weapon, the SMG-34 is slightly higher calibre than other weapons of similar type. It uses the same type of magazine as other SMGs, but due to the higher calibre, each holds less rounds. It lacks the mini-stun upgrade of the other SMGs, but offers accurate, high-damage rounds. Rate of fire is somewhere between the SMG-45 Defender and the MP-98 Knight, ensuring manageable ammunition consumption. The SMG-34 is part of the Commando equipment kit.

In many ways, the Ninja is to SMGs what AR-20L Justice is to assault rifles - superior firepower at the cost of some flexibility. Though it lacks its cousin's unstoppable Penetrator rounds, the Ninja deals the most per-bullet damage out of all the SMGs, giving it a relatively high level of burst damage (although not as much as the MP-98 Knight).

Unfortunately, whilst it possesses high firepower, it is the only SMG without mini-stun rounds, making it less desirable for squad support. When dealing with large clusters of light enemies or single tougher ones, other SMGs (or one-handed weapons) might be a better choice. Kit yourself accordingly.

One-handed
The Ninja is a one-handed weapon, and increases a Helldiver's mobility while aiming. SMGs can be used when carrying objectives such as the Black Box, Illuminate Power Core or Artillery shells.

Mortally wounded Helldivers can draw their one-handed weapon automatically by using the aiming controls (right analog stick or mouse). Keep in mind that it needs to be manually switched back to the previously selected weapon after dropping whatever the player was carrying or after recovering from mortal wounds.

Weapon Stats
Helldivers start with 8 magazines of Ninja ammunition, and can carry up to 16. Each magazine contains 30 rounds (45 with the Extended Magazine upgrade). If 10 or less rounds remain in the magazine when the weapon is fired, the 'low ammunition' warning sound will play.

Reload time for a fully emptied magazine is 1.5 seconds; if reloaded while there are still rounds in the magazine, this drops to 1 second. In addition, this keeps a round in the chamber. This means a Ninja with the Extended Magazine upgrade and a chambered round gives a total of 46 shots before needing to be reloaded.

Unlock Requirement
The Ninja is a DLC weapon, available at any rank to those who purchase the Commando equipment kit.

Trivia

 * Despite having a Suppressor, the SMG-34 Ninja is just as loud as other weapons and draws attention just as much.