Like any gun, your satisfaction with the GSG522 will depend upon what you want to do with it and what you expect from it. If you are after a 22LR clone of the MP5 for training purposes, you may be disappointed--I can't believe that any military or law enforcement use this as a trainer, it's just too weak for that. If you are after a fun toy, however, then the GSG522 could be your man.
Make no mistake, the GSG522 is a toy. You will notice this right out of the box. The butt stock is everything you would expect to see on a cap gun from Toys-R-Us. The rear sight is plastic as is the scope mount--yes, the scope mount is plastic. Both the front annular shroud and rear peep sight of the original MP5 (and earlier version of the GSG) have been exchanged for a poorer system that seriously compromises vertical accuracy. I can't imagine getting the cheaper, light weight version where more parts are plastic. The good news is that all of these defects can be fixed with a conversion kit, aluminum scope mount, better butt stock, etc. The bad news is that to do so will cost you an additional $100 to $200, or more.
If you can get past that this is a toy, you will have a lot of fun at the range. With the original style iron sights from a conversion kit or found online installed, it's quite accurate. The trigger is fast and pretty light. It works well with many types of ammo, and malfunctions are rare.
1. Very fun to shoot
2. Accurate and reasonably reliable.
3. Damn fun to shoot
1. It's a toy
2. An overly-complicated design makes it a pain to disassemble and clean
3. Expect to add at least $100 in improvements (the scope mount is useless for starters)
4. Made from cheap, poor quality materials
While I won't be selling my GSG522 because of the fun factor, if I had to do it over again, I wouldn't have bought one. Not worth the price. If you are only going to get one "tacticool" gun in 22LR, buy a Sig 522. I have both, and the Sig is hands down the better of the two. It's better designed and made, just as fun and not a toy.
Rating: 3 of 5 Stars!