Grenade Launcher

Gives the shotgun the ability to launch a grenade which causes the same amount of damage as your equipped shotgun. The launched grenade acts like a frag grenade, inflicting 100% of its damage to the target and 30% splash damage to enemies adjacent to the target.

The Grenade Launcher uses 2 shotgun shells per use.

It has an independent cool-down timer lasting 45 seconds, after which you can use the Grenade Launcher again.

Upgrades
Upgrading increases the grenade damage, when compared to your equipped shotgun.

Quirks
Attempting the Grenade Launcher sometimes doesn't do what you expect:
 * If you are standing and attempt the Grenade Launcher, it may work or not depending on what your target is doing. If your target is threatening you; attempting the Grenade Launcher will instead switch your weapon and use shotgun rounds until the target is dead, you crouch, or you force a weapon change.
 * If you are standing and your enemy is not otherwise threatening you, you will launch the grenade and then shoot an extra shotgun round just before the grenade explodes (using 3 total shotgun rounds).

How to counter these quirks:
 * If you are crouching and attempt the Grenade Launcher, you will always launch the grenade (assuming you have the ammo) and you will never shoot the extra shotgun round before the grenade explodes.
 * If you are already using the shotgun and attempt the Grenade Launcher, you will always launch a grenade (assuming you have the ammo).