Just bought a PX-4, having been used to a 92FS.

The blowback is a bit of fun - but heavy on CO2 (obv).

Accuracy is pretty poor out of the box. The whole barrel assembly has several parts, inside each other, all of which end up with quite a bit of play at end of barrel. It is improvable slightly - see my other thread on it.

However, treat it as a blowback plinker for fun and it's a light usable one, which hopefully answers your question.