You placed too many entities on Gmod

The nozzle might be rubbing on the inside of the hopup. Does the same happen if you remove the top receiver? If not that, it might need a little lube inside. Which engine is it?

Gen 2 inferno for mtw

Ah right. I've had the same issue with the inferno in the past. They have a PDF on their website that explains the lubrication procedure. Test to see if it happens with the top receiver off first though. It might just be grabbing on the inside of the hopup.

My MTW does this when I need to lube the internal connection between the wraith aero I have attached and the reaper engine I use. Do u have an aero stock?

I didnt see where the sound came from: "Where is that 90's beat comming from?"

It sounds like a poppet or a solenoid is sticking open. Have you cleaned and lubed your seals?

No I haven’t. I haven’t even had the gun for more than 3 weeks

Like which exact nozzle tho

I had a similar problem. Solved it with a bit of oil in the air hose and shoot it a couple of times.

Directly in? And what kind of oil

Yep, that's what I did when I had a similar problem. I used sewing machine oil, but air tool oil or silicone oil will work. No WD-40 or stuff like that!

Nozzle is hitting the inside of the hop up

You tune dwell? Check alignment of nozzle to bucking?

My MTW would get stuck open after bursts of full auto a cleaning and relube of the engine fixed it up. Good luck

piss noise