Odd issue with Cybergun Perun P90 (Carries on firing for a second or two after releasing trigger on full auto)

[Punisher3990]

Good evening all, 

 

Summary / Setup

I recently built and upgraded a CyberGun P90. Key specs: fitted with a Perun MOSFET (default settings, calibrated), running a Turnigy Nano-Tech 3S 1200 mAh 11.1 V LiPo (T-connector), and upgraded inner barrel / hop rubber / nub (ZCI barrel, Maple Leaf rubber).

 

Problem
When on full-auto, the gun fires normally when I press the trigger, but when I release the trigger it continues firing for 1–2 seconds before stopping. It feels like a delayed cut-off. Small bursts (short presses) behave normally; the problem only occurs if I hold the trigger for a few seconds. This is dangerous in skirmish use because the gun keeps firing after I’ve released the trigger.

 

What I’ve ruled out / notes

The behaviour is reminiscent of old triggerbar/contact stickiness, but this build uses a Perun MOSFET.

MOSFET is at default settings with calibration done.

Happens reliably on full auto after holding the trigger for several seconds; short bursts are usually fine.

 

I can supply a short video showing the issue if that helps — tell me what you’d like captured (angles, slow motion, closeups).

 

Thanks for your help

 

 

Edited 4 hours ago by Punisher3990
grammmmmmmmar

[Colin Allen]

Is the trigger returning quickly enough when released after longer bursts in FA?  I cannot think why it should do so, but...

Also, try reducing the Stage 2 trigger sensitivity to see if that affects it.

[Punisher3990]

I think so. It doesnt seem to be getting stuck or rubbing. 

 

I will try get a video of it tomorrow. Bit late to shoot it off right now but I will also try altering the settings you mention too.