40mm grenade

A 40mm HEDP grenade used in the M319 Individual Grenade Launcher.

The 40mm High Explosive Dual-Purpose (HEDP) Grenade is a munitions type utilized exclusively by the M319 Individual Grenade Launcher. ^[1]

Overview

The 40mm grenade has two detonation modes, depending upon the way it is detonated after firing. The first detonation mode, upon being fired, bounces off a surface once, or when it strikes an organic target, will detonate almost immediately, causing an instant kill. The second detonation mode results in a delayed detonation, usually when the user takes their finger off the trigger after holding it down for a time. Also, the grenade is also capable of emitting an electromagnetic pulse, so when detonated in close proximity to a mechanical target, like a Wraith, a Ghost, or a Revenant, the targeted vehicle will automatically power down temporarily.

Gallery

Profile view of the 40mm HEDP Grenade in Halo: Reach.
The 40mm grenade as it leaves the M319 IGL's firing tube.

List of appearances

Halo: Reach (First appearance)
Halo 5: Guardians

Sources

^ Halo: The Essential Visual Guide, page 84

v • d • e List of known ammunition used by the UNSC

Armor-piercing	.390 • .450 • 12.7×99mm AP • 14.5×114mm • 25x130mm • M118 FMJ-AP (7.62×51mm) • M634 X-HP-SAP (9.5×40mm) • MUTA-AP-09334 • PGU-42/B API

High-explosive	40mm grenade • 9X-G Gyroc rocket • M9030 HEI/RD • M19 surface-to-surface missile • M21 antipersonnel rocket • M29 rocket • M225 SAP-HE • S1 canister shell • M645 FTP-HE • M718 SAPHEI • HEDP

Caseless	M443 Caseless FMJ

Shotgun	8-Gauge Magnum • 12-Gauge

Others	Grappling round • M53 non-lethal round • Shredder round • Stun round • Tactical training round

v • d • e

Ordnance in UNSC service

Missiles and rockets

Ground-launched	Anaconda SAM • Argent V • ASRGAM-10X • Lancet • ASGM-7 • M5100 LTM

Air-launched	AAM-50XR • AGM-79C • Anvil ASM (ANVIL-II • ANVIL-IV) • Argent V • ASGM-4 • ASGM-10 • ASGM-15 • MITV Pod • Phoenix missile • Scorpion missile • ST/Medusa missile

Ship-launched	Archer • Ares • Bident • Fusion rocket • Harpoon • Howler • Hyperion • Longbow • Shrieker • Rapier • Rudra • Shiva (VE-3) • Streak

Launch systems

A-74 Sylver missile launcher • ATAF missile turret • M39 rocket turret • M5920 missile launcher • M79 MLRS • M80 MLRS • Lance GMWS (M95 • M97) • M260 MLRS • M302 rocket pod • M400 missile launcher • M651 missile launcher • M/RODAS delivery system • Scimitar rocket pod • "Shoulder Angel" • Unidentified SAM launcher

Nuclear weapons

Medium Fusion Destructive Device	FENRIS nuclear warhead • Fury tactical nuclear weapon • HAVOK tactical nuclear weapon

Strategic	11-B1 intercontinental ballistic missile • Harpoon nuclear missile • Hyperion nuclear missile • NOVA bomb • Rudra-class nuclear missile • Shiva-class nuclear missile (VE-3 type)

Chemical weapons

Narcozine gas • VX 7 nerve gas

Mines

Ground	Antilon anti-personnel mine • Asteroidea anti-personnel mine • Cryo mine • Lotus anti-tank mine • TR/9 antipersonnel mine • Type 14 Magnetic/Anti-Tank Mine • Type 18 Magnetic/Bayonet-style Claymore • Unidentified landmine

Space	M441 Hornet Remote Explosive System • M1011 Moray space mine