I've had this gun for two years now, and i have no complaints. The blowback sounds and looks amazing when shooting. The gun has a decent fps, as well as rpm. I run off of only an 8.4 volt battery and the fire rate is still impressive... There is a rail under the carrying handle, but you'll need a riser mount to be able to see over the front sight with an optic. The front sight is not removable unless you change the entire outer barrel. the orange flash hider IS removable! it's screwed and glued on, so you'll have to melt the glue before you can unscrew it (look on youtube for ways of taking flash hiders off). there is a 14mm counter clockwise thread under the flash hider.
When i first got the gun, i did have to disassemble it to tighten a few screws and pins that came loose during shipping. But overall, this is a SUPER nice gun and perfect for beginners. Also, make sure you frequently clean and lube the inner parts of the gun.
The hop up works great too and i haven't had a problem with it yet. it is located behind the dust cover and you can adjust it by pulling the charging handle back, and there you will see a green knob, turn it clockwise to hop up, and counter clockwise to hop down.
-Good fps and rate of fire
-Easy to disassemble
-Beautiful sound when firing
-Functioning Charging handle
-Functioning depressurizer button
-My dust cover fell completely off somehow somewhere, and was never seen again.
-optics on rail cant see over front sight
none else that i can think of
Rating: [5 of 5 Stars!]