You can pretty easily spend a lot of money modding these pistols for better performance, in terms of usability, accuracy and power. I put a steel breech on mine, then a red dot sight, then an improved trigger and sear, plus a stiffer barrel band, and I swear that just barely scratches the surface of what's available for these pistols. Next up will probably be the carbine stock.
The thing is that I owned a dead-stock copy back in high school, and it only failed me after my dad used God-knows-what oil on the seals, then left it to rust inside and out.