KP40 Fang | Starside Armory

KP40 SERIES

Improvised low-energy sidearm

1/9

Modified civilian market compressed gas-operated pellet gun. Fires 4.5mm spherical projectiles made of recycled conductive metals (colloquially known as BBs). BBs are first accelerated by discharge of compressed carbon dioxide, a function of the base pellet gun. A secondary acceleration force is then imparted by electromagnetic coils built into the muzzle.

By design, the projectile features very low velocity and mass compared to modern firearms. The intended application of the KP40 is as a non-lethal deterrant with minimal capacity for collateral damage. Easily outclassed by military armor. Historically used in peacekeeping and other non-combat roles.

A very limited amount of KP40s were ever produced by Starside Armory. Conversion kits and STL file packs may be available in the store; the base Umarex XP40 BB gun must be procured separately.

Please note that while the KP40 will operate in vacuum, the gas cartridge cannot be installed without atmospheric pressure. If attempted in vacuum, rapid decompression and sublimation will render the cartridge useless, and can be hazardous in some scenarios.

Item Type

Firearm

Classification

Ballistic

Sub-Class

Low-J

Weight (kg) [unloaded]

0.62

Length (cm)

20.5

Width (cm)

2.9

Height (cm) [no optic]

14.3

Caliber

4.5mm

Cycling Type

Semi-automatic

Trigger Mechanism

Digital/Mech. Hybrid

Effective Range (m) [1bar]

~15

Capacity (battery)

~800

Capacity (gas) [1bar]

~100

Capacity (rounds)

20+0

Battery Voltage

12VDC

Operating System

Hexacom AMMS 3C

EVA Performance

No gas refill

DroneKiller Rating

1/10

Comes with high-vis iron sights and a reflex optical sight.

No purpose-built upgrades are available for the KP40. For you DIYers out there:

Hexacom micro-drone electromagnetic components and energy cells might be compatible.
EM system housing is proprietary to Starside Armory; STL files available in the store (coming soon).
The timing of the gas valve is tuned for 1 bar. To minimize gas waste in vacuum, the blowoff valve can be sealed with a product such as Leak Proof Tech Seal Spray.

The KP40 sidearm is a prime example of the ingenious solutions that emerge in the depths of space, where scarce resources, specific requirements, and diverse challenges converge in unpredictable manners. In the case of this firearm, four main factors guided its development:

As with all burgeoning frontiers, a clear and widespread need for order/security/self-defense.
Limited availability of typical firearms to civilians due to various bureaucratic barriers, orbital export expenses/queues, and military priority.
The hard-learned lesson that the destructive potential of many modern firearms proved counter-productive when used among delicate habitats, budget hulls, mission-critical supplies, etc.
The chance presence of a small cache of compressed gas-operated BB guns aboard JOS.

While this weapon is considered laughably weak and unreliable for military applications, it is just powerful enough to make a disgruntled, pipe-wielding engineer think twice about storming the cockpit. A tiny hole in a pressure suit is enough to cause serious issues while stopping short of instant death and catastrophic collateral damage. The general notion is that if you are hit with a KP40, you'll definitely live to regret it.

Sometimes a suboptimal tool can still prove useful, especially if its all you can get.