Very accurate (maybe its just the style of play it demands) gas effecient, and lightweight. A nice low profile. Durable. Increases skills. very customizable.
possibly TOO lightweight... I feel like a hit against a tree will do some SERIOUS damage. it has fairly fragil internals. My older brother took it out of my room when i wasn't home and used it for one day, now the velocity screw keeps falling out, 1/2 of the spring broke off, the pump was to FORCED back with nearly twice the effort it normally takes, and the trigger saftey is malfunctioning constatly. Maybe thats just mine thats so fragil.
All around it is an excellent gun. Just take care of it as if it was the most important thing to you. One day of complete neglect will cause you many repair fees. If cared for with any amount of common sense however, it is one of the most reliable guns you will ever pick up.