I've owned only one gas gun before this and that was a WE 1911 (not tactical) so my perspective might be a bit limited, but I would still recomend this gun to anyone. The rails are pretty useful, and as a left handed shooter I appreciated the ambi safety. Since getting a KWA M4 I've had high expectations for their products and this did not dissapoint. The gas system is fantastic, I can get about 30-40 shots off of one fill of propane. Internally (again, I am comapring this to a WE) it is rock-solid, blows the WE away.
Velocity (hard hittinv)
I was a bit hesitant about buying a gun with a non-metal outer barrel, but it hasn't been a problem or shown any wear and tear.
Rating: [5 of 5 Stars!]