noticed a lot of people are chasing for loose change + chill clip or impulse amplifier + chill clip just want to put it out there that it's actually air trigger + chill clip, because enhanced air trigger gives the equivalent of double ammo reserve mods which obviously circumvents the ammo economy nerf on rocket sidearms recently, happy farming peeps. edit: some other good roles have been dropped in the replies, take a gander - reverberation + chill clip - reverberation gives the sidearm a bigger blast radius and increases the damage a slight amount, helping with spreading slow/freeze and putting down majors deconstruct + chill clip - due to frozen enemies counting as constructs, when you shatter a boss/destroy a frozen enemy, it'll automatically add more ammo to the magazine to help you continue firing, probably some good use out of this for various things; wiping out majors, easy ad-clear, and maybe as back-up damage on a boss.