A friend gave me this gun and it is not a good gun. it loads in the top, under the "red dot sight". bbs fly out in all directions and it is very inconsistent in its firing pattern. the muzzle velocity is probably around 200 fps with .12g bbs, but every bb has a different and unique spin which sends it anywhere but your intended target.
-easy to pump
-high ammo capacity
-nice feel to it
-looks pretty cool
-cheap plastic build, inside and out
-odd spin on each shot
-super unreliable and inconsistent
-gravity fed (doesn't put a bb in the chamber if you pump while jumping)
-fell apart on me after two weeks, three instances of use.