While the quality of your item may seem fair to you, it does not match up to or meet the standards of that of the majority of the members of this website. A few reviews of the exact gun that you own have been done in the past and when compared to other airsoft guns it was found to not be all that great. A few of the cons were that it had a plastic body, and that its internal mechbox was made of plastic as well. While your item may seem to function the same way as most other airsoft guns do, its performance will pale when compared to something of a qaulity manufactured airsoft gun. Think Kraft Dinner VS generic cheese noodles. While they may appear to be the same, there noticeable differences in quality, and those differences are reflected by the price.
Take what people say on this website with a grain of salt, sometimes people come off with a little more attitude than they should.
"Its only a little bit on fire"