Talk:Combustion Beam/@comment-86.103.171.148-20160804101640/@comment-7645613-20160807083536

It is flat damage, not affected by anything at all. You could put this mod on an unranked weapon with no mods except this one and a blank frame, and it would still deal 600 damage. the damage type is still unknown, it may be finisher damage and affected by range or blast without the proc.