What can I do with this?

fps: 340 with .12g

EDIT to the one who edited my post. My particular version of this gun is rated at 370 fps due to a particular part inside it and has a slightly different barrel. Couldn't find a picture of the exact one I have.

If you are actually serious about that, then absolutely nothing. That rifle looks like if you tried to take it apart to do any mods to it, you would probably break something and then out of luck completely.

The lowest upgradeable rifles out there would probably be Echo1/JG. Anything lower quality like LPEGs ( Low powered Electric Gun) and cheap springers aren't even with a cent.

It's a little gun I have around my house. Was wondering if I could do anything to it to make it a little better. Whether it be a cheap mod or a part replacement. It shoots okay. Tried it the other day and hit a sign hundred feet away on my first try. Anything beyond that and the bb begins to curve.