[Batchokookies]

So my friend's birthday is coming up soon, and despite council from me he decided to get a kraken about a month ago. Seeing as we are both underage, and him and I both have a limited number of friends that we can play with, I would like him to have a durable gun.

So I agreed that for his birthday I would provide and install some parts for it to make it not necessarily more powerful, but more durable. My budget it 70$ (dinky, I know) but it's all I got. So far I've thought of these, but I was wanting input from the experts before I went and wasted my money on useless and/or parts that are already in the gun.

-MadBull Polycarbonate piston, $20
-Deep Fire Bearing spring guide, $20

(Plus $11 S&H)

Now I have also considered metal bushings and a new air nozzle, but I wasn't sure if it came stock with metal bushings and on the necessity of either, keeping in mind i'm not trying to make it more powerful. Also If there are any other quick fix issues with the craken I should know about (too much grease in the gearbox, reshimming) that would be great. So any suggestions?

P.S. I'm ordering from Airsoftparts