I’ve had mine since February, great blaster. I love it for cqb.
I run a high discharge 11.1v battery on mine and have since day 1, no dramas.
Touch wood it still seems to be going strong.
I’ve just left it standard and havent pulled it down since purchasing. I’ll be tearing it down for some maintenance and maybe a few minor upgrades soon when I find some time. It’s sitting around 230-250fps currently.
It runs cast 18:1 gears and a nylon piston with one metal tooth so an upgrade that would be worthy would probably be a full metal rack piston and while you’re there you could definitely look at replacing the oring.
It’s a great blaster out of the box, feels nice and has a bit of weight to it. Magazine is small but I would highly recommend them.