[lurkingknight]

definitely sounds like semi auto locking... you need to fully pull the trigger and wait for the gun to cycle before pulling again to avoid this. What's going on is you're partially cycling the gun and it will stop somewhere in the middle of the cycle where it usually requires a lot of power or torque to turn over and pull it off this spot. A full auto burst will sometimes unlock it for you. Sometimes on a p90 it will mechanically jam the trigger device on the cutoff lever so it physically blocks it from being able to close the circuit.

You can't fully eliminate this problem, my p90 with amazing trigger response will still lock up from time to time.

You can make it less of an issue... there's a few options...

First is more efficient power delivery... lower resistance wire, better fuse setup or no fuse at all. A simple mosfet will also create better electric efficiency/delivery. This will increase auto rate of fire.

You can put a bigger battery on, higher discharge lipo or higher mahl nimh... this increases rate of fire... increases wear on trigger components without a mosfet.

You can put in a faster/higher torque motor... shs, jg blue, element, lonex... any neodymium magnet motor. This drastically increases torque and rate of fire... lower power springs might self destruct your piston.

You can put in a lower ratio gearset... so the gun mechanically completes a cycle faster... this increases your rate of fire.

The problem becomes that when you put all of this in... you get ridiculous rates of fire... but super short trigger response... in fact.. you get disgusting rapeworthy rate of fire if you know what you're doing. For most people that's too fast.. talking in the 30-40 BBs a second out of the front of your gun.

You can get into specialized expensive mosfets that control your rate of fire and retain your super fast trigger.

But you're looking at an extensive list of upgrades at that point, not to mention really specific tuning so the gun doesn't assplode on itself. Lots of supporting reliability mods need to be done if you want that kind of fast trigger response. They're not hard to do if you take your time to read up and do them, but not everyone wants to do that.

There's not much you can actually do if you leave your gun as is to fix it... just complete the shot before pulling the trigger again.