Editing M16 rifle (section)

===Grenade launchers and shotguns===
[[File:Loading M203 40 mm grenade launcher attached to an M16 rifle.jpg|right|thumb|Loading an [[M203 grenade launcher|M203 40&nbsp;mm grenade launcher]] attached to an M16A1 rifle with a practice round.]]

All current M16-type rifles can mount under-barrel 40&nbsp;mm grenade launchers, such as the M203 and [[M320 Grenade Launcher Module|M320]]. Both use the same [[40 mm grenade#40×46 mm LV (40 mm Low Velocity)|40×46mm LV]] grenades as the older, stand-alone [[M79 grenade launcher]]. The M16 can also mount under-barrel 12 gauge shotguns such as [[KAC Masterkey]] or the [[M26 Modular Accessory Shotgun System]].