sentences:  The Diehl BGT Defence DM101 A2 (IM) HE-Frag grenade is the Bundeswehr's standard-issue ammunition for use with the weapon.It was designed to contain most of its lethal fragmentation within a 5-meter area of effect, a measure meant to reduce "friendly fire" casualties during rapid assaults or close-in perimeter defense.A development of the HK79A1 is the 40 mm underslung SA80 grenade launcher, adapted for use on the British 5.56×45mm NATO L85A1 assault rifle, where it is mounted by replacing the handguard in a similar manner to the early versions of the US-made M203.