So I just received this gun from Airsoft GI for $140 and a 9.6v 1400 mAh battery (use coupon code: "tim" for 10% off of your order. I saved $17 on this order). First impressions of the gun: the magazine is is pretty cool, it is a metal 450 rd hi-cap and on it says "5.56mm X 45" which is the the bullet the real M4 shoots. The mag feeds great no problem so far, however it does wobble some, so I am going to put some electrical tape around the mag. Buffer tube is metal, has a 6 position LE stock. Forward assist works but does nothing. Charging handle is metal and DOES NOT open dust cover to adjust hop-up, you have to get a finger nail under the dust cover to get at the hop-up which is really easy. All of the plastic parts of the gun are poly fiber plastic which in my opinion is WAYYY more durable than ABS. The outer and inner barrel are metal (the gun came with a 6.04 tightbore barrel) and so is the front sight. The rail on top of the upper receiver is also metal. And the trigger and trigger guard are metal. There is NOT a United States Marine Corps logo on the receiver the logo is the Combat Machine logo. On Airsoft GI's website they say this gun shoots at around 320-330 FPS but a slip of paper inside of the box said it shot 335 FPS and was signed by an ASGI employee who tested the gun. This gun is incredibly accurate at 175-200 feet using G&G high grade 0.20 gram BBs. I was shooting at the leg of my trampoleen at about 150 feet and even with the cross wind I still hit the 3 inch wide leg 7 out of 10 times! The battery compartment is in the handguard and that can house a mini type battery (I have a 9.6v nunchuck type battery and a rectangular Intellect 9.6v 1400 mAh battery and they both fit great). RPM is insane with the 9.6v I would totally recommend it. And that is my first impressions of this gun. If you have any questions about it feel free to ask. And also... this happened three day after I got it... it simply wouldn't work. But long story short, it was the fuse. This gun takes a short 25 amp fuse. I couldn't find a short fuse anywhere so I took out the original fuse house put in one that could house a larger 25 amp fuse and it works like new again. I paid less than $4.00 to do this simple modification.
Here is the link to my video review on this gun at YouTube.com:
-Good FPS (definitely good for CQB games)
-Polymer plastic (same plastic used on real steel glock handguns)
-Excellent ROF (if thats what you're into)
-Pretty accurate (If I'm not mistaken this gun comes with a 6.03mm tightbore barrel already installed)
-Good metal (not some cheap pot metal)
-G&G Armament gearbox (you will find that it says "G&G Armament" stamped into the left side of the gearbox if you take off the upper receiver)
-Fuse blew after three days of use.. not a big deal. Fuses are less than $3.
Rating: [5 of 5 Stars!]