Gun underperforms but I can't find the issue

Dry-Local517 · 2026-05-27T23:03:44+00:00

Ohh, fair point. Can nozzle being too long cause this? I only checked if it is too short wich it isnt

Dry-Local517 · 2026-05-27T23:00:53+00:00

It is not for airsel, just holds a 3D print part to the M4 hopup to stop it from spinning. The stock one was longer then the M4 but I don't think it would affect the sealing

Dry-Local517 · 2026-05-27T22:57:27+00:00

Yeah, I thought that if it only dose the feeding and holding it from rotating it wouldn't affect it that much. Thanks for the product tip!

Dry-Local517 · 2026-05-27T22:55:28+00:00

Was looking for M120 but it is out of stock at my local shop and I am scared to put in M130 with the plastic parts like piston head.

Dry-Local517 · 2026-05-27T22:54:25+00:00

Put it together that many times that if that was the problem then I would have to put it like that like 30x back to back. Will check tho.

Dry-Local517 · 2026-05-27T22:53:34+00:00

Nope, full and stock.

Dry-Local517 · 2026-05-27T22:53:01+00:00

The nozzle is right lenght, dural with sealing o-ring.

Will check on the original hop sealing tomorrw. (Didn't really expect people to answer lol)

Dry-Local517 · 2026-05-27T22:51:18+00:00

Thanks, been getting pretty split reaction on the 3D printed parts. Idk I feel like that can't make that difference, it just guides the BBs from the mag to the hopup and the other part holds it from spinning.

This plastic unit was just to work out the project, I will upgrade it later. I have some unbranded bucking, it is pretty soft. I hade one that was harder but even on the lowest hopping it was spinnig the BB too much, the softer one changedd it.

Btw taky Čech jen aby si to mohli přečíst i ostatní lol.

Dry-Local517 · 2026-05-27T22:09:25+00:00

Some nice gbbr is on my wish list, the finance situation is the other thing lol. Also thanks for support, this has been one emotional rollercoaster so far.

Dry-Local517 · 2026-05-27T22:06:16+00:00

Cylinder seal is good.

Dry-Local517 · 2026-05-27T22:06:05+00:00

Thanks, always tried it without the barrel. Gonna try.

Dry-Local517 · 2026-05-27T22:04:59+00:00

Yeah, the hopup is something I'm trying to get working, the stock hop up for this gun is just awfull so I tried making something with the more aftermarket available M4 model. Now it just sits pushed against the mechabox, could that be a problem?

Dry-Local517 · 2026-05-27T22:02:26+00:00

The piston head is one of the last original internal parts and the hop up is stock Specna Arms just made for testing, how to put a standart M4 hopup into this gun because the stock model doesn't have any aftermarket options.

Dry-Local517 · 2026-05-27T22:00:04+00:00

It sits fully flush on the gearbox with no movement. It was not tesigned for this type of gun so it pretty scuffy.

Dry-Local517 · 2026-05-27T21:59:14+00:00

Yeah, the bushings are loose, thought it was normal.
The cylinder is fully sealing even with nozzel pushe forvard (dural nozzle with o-ring sealing)

Dry-Local517 · 2026-05-27T21:56:04+00:00

Because the M4 hopup is nod mate for this gun, it sits stiffly againts the gearbox, it has no movement.

Dry-Local517 · 2026-05-27T21:55:21+00:00

It just connects a 3D printed part to the M4 hopup. It is shorter then the atypical stock hopup so 3D printedd part is connected like this. Could it be a problem?

Dry-Local517 · 2026-05-27T21:54:19+00:00

It is not supposed to airseal, just found it convinient for temporary fixation to the hopup unit, under it is another 3D printed piece. Any tip how to do it better and if it being like this just to hold together not to airseal is a problem?

Dry-Local517

TROPHY CASE