[Ricochet]

Replace the hop-up and nozzle, in fact, get an R-hop. Depending on its stock FPS you may want to bump it up slightly so it can handle a 0.28g round nicely. Between 380 - 400 FPS with a 0.20g is well balanced. But Hop-up is number one. Your G&G should be able to reach out to 200 feet accurately if done right. At least it'll be a good, usable gun.

You likely don't have to do anything to the mechbox, but having it properly greased, shimmed and maintained will extend its life. Get a solid and well known gun doc to do this for you. They may even be able to R-Hop your gun.

Run the motor till it dies, that's just the way. Things you can do is to ensure its adjusted properly and use good quality batteries. Turnigy-Nanotech batteries are excellent and only about $8.99US from Hobbyking.com. Make sure to buy the right cell size, voltage and milliamperes. A solid balance charger is also necessary. Hobby king sells the IMAX B6 for around $35 US. You can't go wrong. Make sure to order from the US warehouse option when ordering from them.

Other things you can do is to make sure you buy quality magazines and BBs, which is something you can do anyways, but will help in avoiding excess pressure on your gun while cycling. Not having BBs chop and avoiding feeding issues not only has a huge effect on performance, but can save your parts.

This will make your G&G competitive and last as long as possible. When something does finally go on it, you'll likely only need to replace that part, not many airsoft guns completely die and go in the trash. If the motor craters, replace the motor, etc.