Matrix / S&T Sportsline M4 RIS Airsoft AEG Rifle w/ G3 Micro-Switch Gearbox
(Model: Dark Earth Keymod 8")

"Alright I wanted to do an updated review on some modifications I did to it and how it is the craziest gun I have ever fired!
As a stand alone the RPS and FPS is amazing and performs very well!
After my modifications/upgrades it is 10 times better!!!!!!!
Here are my upgrades (Internal)
1. 450 FPS spring
2. T238 CNC 13:1 Gears
3. 30k Matrix 3000 Motor (Crazy strong!)
4. Perun V2 Hybrid MOSFET
5. Speed Trigger
6. 11.1v battery (Not upgrade but way better than below 11.1v LiPo's)
7. I use .25g - .28g and better accuracy
8. 4UAD Bucking and Nub
9. Lancer Tactical Hop-Up (It's actually good lol)
Upgrades (External)
1. ******Acetech Blaster Tracer Unit******
2. JG Foregrip
3. 2-point Sling
4. Red dot, scope (Both on Amazon)
5. Toughsoul Laser/light combo
6. 1100rd Mag (Evike)
7. Barrel/Tracer extension
******Oh my goodness the hassle I went through to install this was crazy, not the tracers fault it's the best! But the gun I got the 9-inch CQB which I love and am glad I got but the suppressor built in made it a little hard to install. I had to buy thread adapters which took awhile but totally worth it I would definitely buy the Carbine 12' just in case you choose to buy a tracer which you totally should!*********
Summary:
RPS increased from around 20 - 32 RPS!
FPS increased from 400 - 446 FPS!
And the weight increased form 6lbs - 10lbs lol!
Great upgrades and responsiveness (Thx Perun!) Totally should get one of these models, the ETU/MOSFET it comes with is already not bad and the gearbox is great for beginners and pros alike! Great gun, I can't rejoice over it enough!

"This is a fantastic gun. I got this several years ago as an inexpensive step-up from my beginner gun, and I've been running it ever since. I have the 350 fps M4A1, and a second one as an extra. I have put a couple hundred dollars of upgrades into mine, and I'm about to do some more, which is why I decided it was time for a review - this is my first review on any product ever. The gun is very robust. It's been good for field, backyard, and MilSim playing. The stock parts are decent, and the tuning of the gear box is pretty good. The first things I replaced were the barrel and hop-up. I use a 6.03mm barrel (no matter what barrel it is, if it's not clean it won't shoot well), and a Madbull bucking. I've also rebuilt the gear box with SHS gears, put in an M120 spring, and a high torque motor. It's now shooting right on 400 fps. Those are the main upgrades I've done that directly affect its performance, and as is, I can ding someone on the top of the head from 60 yards (don't aim for the head =). There is one modification to the lower receiver that I recommend even if you're not going to spend any money on this. The point where your middle finger rests against the joint of the pistol grip and the receiver can be very uncomfortable after long hours of play. If you take out the motor and take off the grip; you can lightly sand and file down all the edges to make it nice and comfortable. This gun can take a good beating, but you still need to treat it with care. DO NOT put a li-po straight in it. It can take it for a while, but you'll burn out the micro switch (thus my next modifications...). If you're going to use a li-po, invest in a high quality MOSFET first. I have taken EVERY part of this gun off and reassembled it without any problems, so don't be afraid to open it up and work on it. If it's your gun, own it. Aesthetically, the gun looks awesome and it's not hard to find external accessories for it. This gun is also very comfortable, and its relatively light weight makes is good for lengthy use (mine weighs about 8 lbs, but that's a bit heavier than the stock gun). This is both an excellent starting gun and a good platform to build from. If you're on a budget and thinking about getting this, stop thinking and order it. Sorry this was so long |=

"Don't let the cheap price fool you. This thing is absolutely worth more you pay! It genuinely shoots 370-400. I assumed it would be low O.O.B so I ordered a lambda .05 and .01 barrel and Maxx M4E Hop up. Now it shoots 450 fps, so now I am putting a softer spring, as I didn't buy a cqb rifle to have to run DMR rules at my local field. My local tech and I were checking it and the spring it comes with is BEEFY! So if you are upgrading, plan on a m110 spring being added to the list, maybe even a m100 if you do more than hop up, barrel, and bucking. The .01 barrel shot the FPS up so much lol (obviously). So now I will slap the .01 in my AK74 since it is stock, the barrel should put it just under 400 fps.

If you get the M4E Maxx Hop Up, I can tell you for a fact you will either need to cut or remove your barrel spring. Only do this if your receivers wont line up. But I guarantee it won't. There is zero air leak. Note the 450 fps. Get this gun, now. It is a diamond for aluminum prices!

IF THIS ISN'T IN YOUR CART BY NOW, THERE IS NO HOPE FOR YOU IN THIS WORLD LOL