after taking it out and firing for a little while, first lets start with the bad, after putting thru about 8 mags, twice the slide did not come all the way back even though there was still gas and ammo in the mag. second, like with any gbb gas can be a pain to get into the mag. not always the most dependible.
Good:
I was very impressed with how hard the gun actually shot, using .25bb's. shot point blank in the arm left a little crater and gushing blood. it was very acurate at about 10yds and progressively got less and less, as I moved back from the targer at 20yds, about a 3in variation and a little drop below10yds shots.
The metal slide works great and does add just a little bit more realism when firing.
Also, this gun is extremmely easy to clean, alot easier to take apart then say my tm m4. after shooting it for a little while i gave a could shots of compressed air on to the spring and "hammer" i guess it would be called.
Overall very worth it, but make sure you buy plenty of mags one just wont do it when firing this gun.