EX 41 grenade launcher
Instead of the standard low-velocity 40×46mm grenade used by the M203 and M79 grenade launchers or the standard high-velocity 40×53mm grenade used by the Mk 19 , the EX 41 used a hybrid of the two developed by Indiana Ordnance . 
<triplet> M203 <subj> 40×46mm grenade <obj> ammunition <triplet> M79 <subj> 40×46mm grenade <obj> ammunition