M7A1 pulse rifle

Specifications
Capacity : 50 rounds

Caliber : 6.5mm

Ammunition types : Cased telescoped.


 * AP(Armor Piercing)
 * Ceramic Frangible

Firing mechanism
M7A1 pulse rifle that fires 6.5 mm cased telescoped ammunition

Ammunition
50 ceramic frangible rounds. This type of ammunition was used to prevent shots accidentally penetrating the hull of the ship or sensitive locations like the reactor or engine. The bullet fractures into tiny pieces upon contact with metal but against soft tissue, it will penetrate and fragment inside.

https://www.youtube.com/watch?v=xAH5XF3mnIk

Ceramic rounds just gave those Scum, as the Marines like to call the Swarm, bruises. The AP rounds will penetrate easier on less armored parts of the Swarm warrior drones but in an old spaceship without internal armored bulkheads, AP rounds were a disaster just waiting to happen.