How do I use the Undermounted Shotgun attachment for assault rifles?

Question

In call of duty: modern warfare 3 (PC version) when playing multiplayer. You can select at weapon level 20 the shotgun attachment for the assault rifle.

How do you fire it?
Does it happen automatically or do you need to use a hot-key ?

Asked by François

Answer

To use an undermounted weapon attachment (either a grenade launcher or a shotgun) you'll need to activate it - this is similar to switching weapons, although it's generally a bit faster than raising or lowering a secondary.

I believe this key can be configured, but by default it is 3. Once you've switched to the unermounted attachment, fire it just like you would any weapon.

Answered by agent86

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