<stdin>

ijontichy@powernoob Starbound/assets $ grep -oh "^  \"[a-zA-Z]\+\" \?: \?" **/*.*gun | sort | uniq
  "accuracy" :
  "baseDps" :
  "description" :
  "directories" :
  "dropCollision" :
  "fireOnRelease" :
  "firePosition" :
  "fireSound" :
  "fireTime" :
  "handPosition" :
  "hands" :
  "image" :
  "imageFrameSelector" :
  "inspectionKind" :
  "inventoryIcon" :
  "itemName" :
  "level" :
  "maxStack" :
  "multiplier" :
  "multiplier":
  "muzzleEffect" :
  "muzzleFlashes" :
  "name" :
  "nameGenerator" :
  "palette" :
  "powerProjectileTime" :
  "powerProjectileType" :
  "projectile" :
  "projectileType" :
  "projectileTypes" :
  "rarity" :
  "rateOfFire" :
  "recoilTime" :
  "shortdescription" :
  "spread" :
  "twoHanded" :
  "walkWhileFiring" :
  "weaponType" :