Changes in bold:

Damage 1
speed 90m/s
energy 0
delay 0.5 s
mass 400
splash 150
prox 100
ammo 10
lifetime 20
grid 2

This weapon does almost zero damage. This make it the perfect candidate to lower down to two(2) grid. Up the prox a bit, reduce the delay, increase the velocity. Up the ammo. And drop the mass down to iceflare weight and suddenly this becomes relevant. You can still only receive two a week from the faction, but that is fine.

+1 reasonable changes for a weapon that basically collects dust.

+1; a good companion to the high-grid weapons while not being overaccessible thanks to the mission locking.

+1
Seems like pretty reasonable changes and it would increase the value of this rarely used weapon.

+1

Worth a try, anyway.