As the SSP2 is a gas-powered pistol, you will need the right gas for your gun.
You can find the appropriate gas here on our website:
(EU): https://eu.novritsch.com/product/airsoft-gas-nimrod-switch/ 
(US): https://us.novritsch.com/product/airsoft-gas/

BB recommendations: 0.32g (but can hop BBs up to 0.46g)

If you want to use CO₂, please note that it should only be used at temperatures below 15 °C/ 59 °F. Using it at higher temperatures will damage the pistol.

If you are having power issues, always first ensure that you are using the correct gas and BBs for the temperature you are using the pistol at.

If the power is too high for the field you are playing at, consider using weaker gas (if possible) or lighter BBs.

This can occur if the baseplate of the magazine extends too far upwards, causing the magazine to not be seated correctly.

To resolve this, you can sand down the top of the baseplate, which allows it to sit higher up in the magazine well.

Gas magazine: If your gas magazine is leaking after filling it, you first need to find out where it is leaking from. You can do this by filling the magazine with gas and submerging it underwater. The bubbles escaping the magazine will show where the leak is.

Leaking from fill valve or exhaust valve:
If the magazine is leaking from either one of the valves, you should first try tightening it, though not too hard, as the valve might break. If the leak continues, then the valve most likely needs to be exchanged.

Leaking from gap in baseplate: If it is leaking from the gap between the body of the magazine and the baseplate, then the hex screw at the bottom of the baseplate simply needs to be tightened. This screw should also not be tightened too hard, to avoid breaking it.

Leaking when filling:

If your SSP2 V1 Magazine leaks while filling the magazine, there is no need to worry – This is completely normal.
These magazines are equipped with a two-stage fill valve, which helps to increase the amount of gas you can put into the magazine. This video explains the concept and how it works:

If your SSP2 has trouble cycling, feeding BBs and even only cocks the hammer halfway sometimes, then the pistol is probably light-striking.
This happens when the pressure from the type of gas used is too weak to cycle the gun properly.

Causes for this can be too weak gas for a given temperature (e.g. green gas at 15 °C), too low temperatures (< 5 °C), or cooldown.
Cooldown occurs if the magazine gets too cold from filling it often or shooting many shots from one magazine in quick succession.
Light striking will also occur when the magazine is running out of gas, as it cannot produce enough pressure with the remaining gas.

This is usually caused by the safety lever of the SSP2 being engaged just enough to lock the trigger and prevent the gun from shooting. You only need to push the safety lever back down, this should unlock the trigger.

Be mindful of your hand placement while shooting, as the safety is engaged even if not pushed up all the way.

If you find that your BBs are getting stuck in the magazine track and not being fed upwards properly, this is often caused by unclean or malformed BBs. It is recommended to try different brands of high-quality BBs and new/different bags.

If the problem persists, even with different brands and new bags of BBs, the BB track in the magazine might be dirty. This can be resolved by removing the magazine spring and cleaning the surfaces of the BB track.