LS aka Arii. It`s Japanese/Korean manufacture.
And the stuff (write) on box are Japanese.
It`s says.....
-This airsoft gun is semi/full auto selectable.
-It Equips aluminium barrel
-Uses HFC gas with silicone oil. Makes smoothy work.
-It Equips Combat holder and Combat holder belt for hold gas tank and tube.
-reserved type mag (?)
-The gas tube connecter made by brass, would`n leak gas.
One-touch connect system.
Im very sorry for bad English...
ops:
It does not says about GBB or NBB. Tha gas tank looks like a old booster type.