"First off I think right out of the box, you have a pretty decent AEG.
The pros on this gun would be that it is very light, both front and back sights are abel to flip up and down, its is very pretty ,adverage FPS and acuracy for a cheaper AEG, and its overall bullpup action and short length. But there are some very serious cons that come into play, for starters the orange flash hider is unremovable, it has a really light and chaeap plastic for both sights, very limeted rail space, the same cheap plastic for the body, and right next to the beautifully ingraved "made is israel by IWI" is a even bigger "made in China". But the ingaved "made in china" aside it is a very close resembleance to the actual IWI Tavor-21. And overall you have an okay AEG for most engagements. "I wold HIGHLY recomend a sling as to not drop it or it WILL break."
If you are looking for a higher quality airsoft Tavor-21 you should check out Elite Force's.... MUCH better.