The MP5A4 is a submachine gun which shoots Pistol Bullets and holds 30 rounds of ammunition.
While the Thompson has higher damage, the MP5A4 has higher accuracy, range, and ammo capacity. This makes it a more versatile weapon / suitable to more situations, and closing the gap between the assault rifles and the submachine guns.
The MP5A4 can be crafted with:
Workbench Level 3 required. It takes 60 seconds to craft.