Simply amazing! This gun is well worth the money and there is absolutely no need to go the extra mile and buy the black one for $60 more. It says 370-400 fps, with a .20 g BB, but I use a 25 g and it still gets ~370 fps. This gun hits hard and is extremely accurate. It is also built very solid. The entire gun is made of metal, except for the pistol grip, which is made of high quality polymer, and the stock, which is made of high grade ADS plastic. One very nice feature is the solid metal RIS unit and flash hider. The gun is also very realistic in size and weight to a real M4. It weighs about 10 lbs, I find the weight no problem at all in combat scenarios. DOES NOT COME WITH HOLOGRAPHIC SCOPE OR FOREGRIP. Kind of obvious but I think it's worth mentioning.
Bottom line, get this gun.
Plus it only comes out to $180 with the "G4AIRSOFT" coupon.
-Solid metal build
-Impressive rate of fire
-Sights are very high quality and easy to use
Nothing, I'm very satisfied. I got exactly what I was looking for and I hope you do also.