||The top slide is aluminum and have a very nice feel to it, the lower frame of the gun is polymer, the magazine can hold up to 25 bbs if you squeeze them in (i would suggest you dont) and with one magazine full of green gas (also purchased at my local airsoft store) you can fire up to 58 consecutive shots, which i think is quite amazing. its definately NOT a gas wasting gun. Here are my pros and cons.
Saves lots of gas
Has good fps for a pistol
Compatible with KWA Glock m17 parts
Overall nice gun
Sometimes may get trigger lock, But if you look in your manual at part 88 all you have to do is pushing it back down.
And thats it!
DO NOT let this one and only con prevent you from buying this gun.
Rating: [5 of 5 Stars!]