440mm Heavy Artillery

A 440mm, or "four-forty" as referred to by UNSC troops, is a UNSC heavy artillery weapon developed around 2552.^[1] It is one of the largest caliber UNSC weapons.

History[]

During a training mission on Onyx, one of the Spartan-III candidates mistook an explosion caused by an Onyx Sentinel for a 440mm piece.^[1]

Appearances[]

Halo: Ghosts of Onyx (First appearance)

Sources[]

↑ ^1.0 ^1.1 Halo: Ghosts of Onyx, page 116

v d e UNSC Vehicle-mounted Weapons and Explosives

Artillery	102mm SC-HE rocket turret • 440mm Heavy Artillery • KG Mk 34 Antipersonnel Flame Mortar Launcher • XM511 Heavy Grenade Launcher • MG460 Automatic Grenade Launcher

Autocannons	AAA Helix Gun • Point Defense Weapon Systems (M910 Rampart • M870 Rampart • M710 Bulwark • Mark 57 Arena • M606 Goalkeeper) • ALI-50 110mm Autocannon • M9109 Coilgun • GUA-23/A Heavy Autocannon • GUA-23/AW/Linkless Feed Autocannon • M1024 ASW/AC 30mm ALA Cannon • M370 • M638

Chemical weapons	Narcozine Gas • VX 7 Nerve Gas

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Lasers and directed energy weapons	M8C G/GNC Spartan Laser • XEV9-M NPC

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Space mines	HORNET Mine • Moray space mine

Tank artillery	M512 90mm SBHV Cannon • M310 120mm SBHV Cannon • M990 150mm ETCSB Cannon