Just reflavor firearms, with the Guns Everywhere setting since apparently we're in the far future and blasters are commonplace.
Aye, reflavor advanced firearms. Missfire this case is likely battery meltdown.
This makes sense and all but it lacks both DM confirmation and fails to address little things like clip size, damage, range, reloading time and cost of both gun and ammunition. For that matter, we're stranded on a 'hostile' planet, can we get additional ammo at all? Can we just plug old batteries into the ships reactor for a full recharge? (Thus making ammo free but only available one place and making batteries hugely valuable.) Or do we only have what we brought with us and have to find some local, and likely magical, means of replenishing supplies if we don't want to end up fighting with knives ourselves? For that matter what about advanced projectile weapons? She keeps saying "think Firefly", and in Firefly they use bullets and shells often enough. Are projectile weapons more reliable? more damaging?
And just to top things off, do blasters have a 'stun' setting and, if they do, does it require the standard -4 penalty to attack roles to do non-lethal damage with a lethal weapon?