The Inertial Element is an electromagnetic projectile accelerator with an integrated rocket-propelled grenade launcher, laser sight, and flashlight. This advanced prototype was designed for accurate open-field combat, and it has an effective range of up to 700 meters. It also acts like a shotgun. The Inertial Element uses superposed ammunition loads, meaning that its method of operation is likely similar to the Metal Storm technology. 

Unlocking 

The Inertial Element is the fifth weapon you obtain in Shadow Complex, however, it is possible to progress in the storyline without obtaining it. After completing the exploding room-mission it will no longer be possible to reach it. If you plan on obtaining it, it is recommended to simply wait and die once you get to the exploding room, and getting it after continuing the game.

Combat

The Inertial Element makes all enemies and bosses incredibly easy, it is able to instantly kill most soldiers and destroy bosses single-handedly, even being able to take down the WSA1 Walker without taking down its shields. It is probably intended for late-game players, to make killing enemies easier. While the weapon has shotgun-like characteristics, it does not have less range compared to previous weapons, and its spread is very slight and inconsequential. As a result, there is virtually no strategy to it.