First put into service in YE 29, Universal Mass Driver Canisters are NAM's standard payload for electromotive weaponry. There are four size grades of UMD canisters available: Armor grade, Vehicle grade, Starship grade, and Capital grade.. This article lists the specifics of each grade, as well as linking to systems that utilize them. UMD canisters are differentiated by color, with the color scheme standardized among the sizes: RED is always some type of high explosive; WHITE is always an armor piercing round; BLACK is a stealth/sniper round; BLUE is intended for EMP and Anti-shield purposes; GREEN is always an antimatter charge; and YELLOW is a harmless subspace pinger.

Armor grade UMD canisters are roughly the same size and shape as a soda can, and are the common munition of Nepleslian anti-material weapons.

• Length: 5“¹⁾
• Caliber: 2.17”²⁾
• Effective Range: 3,000 meters in atmosphere, 5,000 meters in space.
• Muzzle Velocity: 2,000 meters per second in atmosphere, 5,000 meters per second in space.
• Muzzle Blast: Small static discharge as the hypersonic canister leaves the barrel; delayed sonic boom in atmosphere.
• Recoil: Very Heavy
• Energy Source: Electromagnetically propelled canisters of varying types

• AIR 2 FMD-01a
• AIR UMD-01a
• NIGHT UMD-01anc
• VOID Commando UMD-02a
• Night 2 UMD-01anc
• BULLDOG RFMD-02b
• Storm FMD-03R

Starship grade munitions are effectively 8 inch shells, and are the standard kinetic munition used by Nepleslian warships.

• Length: 14“³⁾
• Caliber: 8” ⁴⁾
• Effective Range: 30,000 meters in atmosphere, 300 kilometers in space.
• Muzzle Velocity: 2,000 meters per second in atmosphere, 5,000 meters per second in space.
• Muzzle Blast: Small static discharge as the hypersonic canister leaves the barrel; delayed sonic boom in atmosphere.
• Recoil: Minor but negligible to a starship in combat
• Energy Source: Electromagnetically propelled canisters of varying types

• Na-S/S-04a Rook Automated Defense Platform
• heavy_multiphase_cannon