M203 vs M320 / HK AG36: how to tell them apart

Two grenade launchers that are easy to mix up at a glance. Here is what tells them apart.

M203

Grenade launcher, USA. In service since 1969

What gives it away

40 mm launcher under the handguard of an AR-type rifle; its tube slides forward to load.

Used by

USA, Denmark and many others

M320 / HK AG36

Grenade launcher, Germany. In service since 2009

What gives it away

40 mm launcher whose barrel swings out sideways to load; fits under a rifle or stands alone with its own grip and stock.

Used by

USA, Germany, United Kingdom, Norway and others

M203 · M320 / HK AG36 · All guides