No experience other than hoisting one at the gun store. Heavier than I expected ( around 20 oz.), but that is a plus for me. My opinion...lots of fast little bullets with near zero recoil. Some military folks seem to like the caliber ok becuse they use it in the P90 submachinegun that the FN compliments, but I think they get nastier ammo (armor piercing included) than us civilians are allowed to have. Other than being single action, to me, this is the ultimate spray and pray pistol so far, but for over a grand I can think of a whole bunch of guns I'd rather have. And ammo availability and cost may be a pain too, because this gun won't be easy to keep full being so easy to shoot lots of rounds real fast! You didn't mention what you were planning to use it for. That might help a bit.