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Matrix / S&T Sportsline M4 Airsoft AEG Rifle w/ G3 Micro-Switch Gearbox
(Model: M4A1 w/ M203 400 FPS / Black / Go Airsoft Package)

ID: 89850 (AEG-STAEG-259-BK-GL-L-PKG)

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S&T

438 Customer Reviews (Write a review)

$344.46 $310.01

This item is currently Sold Out

CanadaExport Compliant

This gun has a muzzle velocity rating (FPS) between 366 and 500, and is compliant for export to Canada.

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Options:

Black / 400 FPS$310.01

Dark Earth / 400 FPS$159.00

Options:

Gun Only$199.00

Go Airsoft Package$310.01

Features

Matrix G3 Lipo ready gearbox with micro-switch electronic trigger and quick change spring guide
Integrated MOSFET for improved power usage, motor performance and trigger response
High strength nylon fiber reinforced polymer receiver, stock, buffer tube, grip, and carrying handle
Flat top receiver allows mounting of optics or other accessories
Adjustable 6 position SOPMOD style stock
M203 40mm grenade launcher preinstalled into front hand guard of rifle
The perfect starter pack for any new Airsoft AEG or for anyone looking to add backup accessories to their existing setup

The Matrix "Go Airsoft Starter Package" has been carefully curated to include the base essentials needed to get your AEG up and running for your first Airsoft game.
Everything chosen for this package consists of highly recommended add-ons from both experienced players and technicians alike; great for first time players or for anyone looking for a backup set of accessories.
The package includes: two high quality Matrix 9.6v butterfly type rechargeable battery packs so you will have a spare to swap to while the other charges, a universal smart charger that will optimally charge your batteries every time, a spare magazine to allow you to carry extra ammo out onto the field, a quick acquisition red dot optic for easy aiming, and finally an Airsoft Safety Sack to store your gun in during transport.

The Newly improved G3 gearbox developed under collaboration between Matrix and S&T offers the same features found in the G2 series such as a microswitch trigger, improved steel gears, full steel teeth piston, and aluminum cylinder. New to the G3 series gearboxes is an improved QD spring system which makes it even easier to swap to different strength springs without disassembly. The inline MOSFET features over discharge protection and the electric trigger features a magnetic sensor for improved responsiveness.

Manufacturer: Matrix / S&T

FPS: 400

Disclaimer: Pending availability, the magazine included can be either an ECO Hex magazine or a BAMF magazine.

Length: 680mm - 760mm
Weight: 5.25lbs
Inner Barrel: ~363mm
Magazine Capacity: 300rd Hi-Cap magazine included. Compatible with Matrix, Tokyo Marui and other similar M4 / M16 Series Airsoft AEG Magazines
Thread Direction: 14mm Positive
Gearbox: Ver 2 Full Metal, Fully Upgradeable / with Micro-Switch trigger / 7.4V / 11.1V Lipoly Ready (15~20C)
Motor: Long Type / High torque
Fire Modes: Semi/Full-Auto, Safety
Package Includes: Gun, High Cap Magazine, 2x 9.6v 1600mAh Butterfly Batteries, Smart Charger, Micro Red Dot Optic, Spare Mid-Cap Magazine, Airsoft Safety Sack
Battery: 9.6v NiMh 1600mAh / 11.1v LiPo Butterfly Type recommended (Wired to buffer tube w/ a Small Tamiya connector)
Hopup: Yes, Adjustable
Dimensions (Battery): ~119mm x ~19mm x 2 Sticks
Plug Type: Small Tamiya
Specification: 9.6v 1600mAh Small Butterfly Configuration
Charge Rate: 600mA (Trickle Current of 200mA)
Input Voltage: 100-240v AC

by Samuel M. on 11/28/2025

"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!

by Matthew H. on 11/26/2025

"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 |=

by Matt S. on 05/25/2025

"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

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S&T

About Matrix

Established in 2001 for Airsofters by Airsofters. Team Matrix thrive on the vision to better the sport of Airsoft with affordable high quality Airsoft equipment. With decades of experiences as Airsoft enthusiasts ourselves, we live, sleep, and breathe Airsoft. Matrix offers a wide selection of skirmish grade replicas from rifles to pistols, a wide variety of accessories, and tactical equipment from helmets to boots. It is the Matrix mission to prepare every Airsoft shooter the perfect experience!

About S&T

S&T is a group of Airsoft enthusiasts that produces rifles and parts based on the trends in the Airsoft industry. Their mission is to supply a wide range of quality products with the most competitive pricing for dealers and consumers alike. S&T was founded in 2009 with their HQ office located in Hong Kong, a subsidiary office in Japan, as well as Airsoft / Airgun manufacturing facilities in China.