http://xboxahoy.com/time-to-kill-underslung Sixth episode of 'Time To Kill', a series devoted to the inner workings and mechanics of Call of Duty's multiplayer. Sometimes, the best addition to your weapon - is another weapon. In this episode, we're covering the underslung attachments. For much of Call of Duty's history, the underslung grenade launcher has been a... popular attachment choice - much to the chagrin of some. This explosive option was first introduced in COD4, and quickly cemented its place as a popular attachment choice. Modern Warfare 2 also introduced an underbarrel shotgun, to serve as a close-range backup for close quarters combat, enhancing the versatility of some of the assault rifles. Black Ops saw a similar complement, with the addition of a flamethrower for roasting close-range enemies for those fond of fire. In Modern Warfare 3, only the grenade launcher and shotgun make an appearance. Their return is marked with a significant decrease in overall effectiveness - especially in the case of the grenade launcher - but each can still fulfil a supplementary role within your loadout. The underslung grenade launcher extends your reach with a little explosive ordnance - and although the days of deadly Danger Close-level damage have passed, employing a weapon with a blast radius can still be useful in certain cases. There are a number of different variants of the attachment - the specific variant depends on the weapon to which you attach it. The 'classic' grenade launcher is the M203 - this was the default underslung launcher of choice in both Modern Warfare 1 and 2, and makes a return in MW3. However, it is no longer the default launcher - and only makes an appearance on the 2 American assault rifles: the M16A4 and M4A1. The new default is the M320 - a more modern launcher designed by Heckler and Koch, intended to replace the M203. The M320 also makes an appearance as a standalone secondary weapon, in the M320 GLM. It behaves in exa