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z Matrix Challenge Kit - AIM Sportsline M4 Carbine Airsoft AEG + Metal Body - Black (For Experienced Players)
by Kevin D. Date Added: March 5, 2011
First Impressions:
The box was a nicely decorated box, with the AIM (actual manufacturer of the gun) logo showing up on the box. The gun is only secured by zip ties with no other dampeners, so watch out for that. The magazine was covered in a thin foam film, but not secured by anything. Also, the information on this page shows that the cleaning/unjamming rod did not come with the gun, but when I received the gun, it did. Like most high quality guns, the gun does not come with a battery and charger, which is good, as it keeps the price low so you can buy a smart charger and 9.6v (recommended).

The plastic body is a flat dark gray color (black would be better) with De Opresso Liber trademarks. The dust cover on the plastic body wouldn't close for me, but everything else is nice. The included metal body is very, very nice. The finish is a nice flat black opposed to the dark gray of the plastic. The trademarks are authentic USMC trademarks and are very nicely engraved. Extremely satisfied with a FREE metal body. There is slight wobble in the handguard and the stock, although the stock can be remedied by turning a small knob at the bottom until it feels tight. Only plastic parts after putting on the metal body is the handguard, pistol grip, and stock.

*The magazine is full metal, but there is a bit of sparkled texture to it (still feels very quality though), although I did not find a notch that kept the BBs from falling out of the loading tube, so don't flip your magazine over while it is wound. The magazine feeds smoothly, although I feel like I have to wind up the magazine slightly more than other magazines before (just one or two winds extra) it winds up fully.

Utterly amazing internals for such a cheap gun. FAR outclasses any clone in terms of accuracy (6.04mm tightbore), RoF (hi-speed gears, buy a 9.6v), reliability (Taiwan made, not China, with better parts, such as 8mm ball bearings), and potentially FPS (hi-torque motor, if you replace the spring). The odd thing is that the motor is hi-torque and the gears are hi-speed, but it still works.
Spring guide is metal, M100 spring is metal, piston teeth are metal, cylinder is metal, gears are metal, 8mm ball bearings are metal, and metal gearbox shell.
Piston is polycarb, piston head and cylinder head are polycarb. Piston head DOES have ball bearings though. Both the twopiece hopup for the plastic body and the onepiece for the metal body are plastic.
The gun makes a pretty loud noise (may be a good or bad thing, depending on your situation).
FPS is more consistent then advertised, at around 380-400.
I can't give the statistics for the ROF, but I can tell you it outclasses all my friends' clones.
Accuracy is excellent, achieving about 2-3 inches at 50 feet with .23s or .25s, and 2.5-3.5 inches with .20s.

Get the gun. It is the best value you can possibly get in this price range, with the difference in parts between this and the $240 version being around 30-50 bucks. Also, get the "Holy Cow" 2 mag deal that you can get with this gun. If you don't care about the metal body, just sell it! Selling it will basically buy you the battery, charger, and upgrades with about $20 to spare. I, however, will be keeping mine on as it is an extremely high quality body.

Rating: 5 of 5 Stars! [5 of 5 Stars!]
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