Co2 powered and 350fps, well I don't know how reliable it is but the fps isn't to shabby and it probably has the near 100 dollar price tag for a reason.
Its obviously a nice toy, but honestly thats all it really is. You don't see people at games with guns like those or anything made by crosman for that matter. Most guns you see at games range from around 250-350CAD for a pistol, 450-600CAD or even more for a rifle, and thats in stock configuration.
Don't feel bad though, I am sure you can still have plenty of fun with your M50. Just be carefully, wear eye protection, and always be careful about where you are shooting it. When you are 18 you can get the real guns, the wait isn't as long as you think.
In the mean time you can look here to see alot of guns that are used in games.
http://www.redwolfairsoft.com