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Airsoft Megastore is proud offer our customers the most comprehensive warranty options in the industry. Orders are processed within our standard 1-2 business days from the date of purchase and shipped out with your selected shipping method (chosen at checkout). All accessories and upgrade parts are shipped within their manufacturer's packaging, to best protect each part during shipping. Upon arrival, the player will need to easily attach their own parts. Please be careful not to void your warranty by opening your gearbox, or damaging any of the accessories, as they are not covered under any warranty.

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A&K Airsoft M4A1 Carbine AEG Rifle - Full Metal Gearbox

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  • Model: M4
  • Muzzle Velocity: 320 FPS
  • Build Material: Polymer Receiver, Metal Barrel
  • Weight: 7.5 lbs
  • Inner Barrel: 363 mm
  • Battery Type: 8.4V Mini
  • Gearbox: Version 2 (Metal)
  • Magazine Capacity: 300 rounds
  • Color: Black
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Must Haves

BB CombosBBsExtra MagazinesFace & Eye ProtectionGun BagPremium BatteriesSmart Charger for AEGsTactical Protective GlovesUniversal Tactical Sling

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Our take:  The A&K M4A1 Carbine AEG is part of A&K's line of performance oriented, quality CQB AEGs. These polymer-receiver A&K AEGs are built to be high speed, and perfect for close quarters Airsoft combat. These A&K AEGs not only feature lightweight and durable polymer bodies, but also include everything you will need to start using the rifle! The A&K M4A1 Carbine includes a rechargeable battery, a standard wall charger — although we recommend a universal battery AEG smarter charger — and a 300rd high capacity metal magazine! The M4A1 Carbine AEG has great range despite its compact size, shooting accurately over 100 feet! The M4A1 Carbine AEG is sure to pick off the opposition at extreme distances!

The M4A1 Carbine features a fully adjustable 6 position LE stock, making this AEG more maneuverable and well adapted for close quarters combat. This M4A1 Carbine AEG can also easily hold its own in an outdoor environment. With a precision inner barrel and fully adjustable hop-up, it can easily hit targets beyond 100 feet! The M4A1 Carbine AEG features a high-quality impact-resistant polymer upper and lower receiver, a full metal outer barrel, metal front and rear iron sights, and metal top rail. The polymer components on the rifle are the retractable stock, carrying handle, motor grip and texture handguard — which can be upgraded to an integrated drop-in quad rail system for modular capabilities. The A&K M4A1 Carbine's construction is extremely durable, and has a realistic weight and feel.

The A&K  M4A1 Carbine has a redesigned and reinforced metal gearbox with a factory installed high speed motor, making it one of the best-performing polymer body M4 AEGs on the market for under $150! The full metal gearbox features metal bushings, a metal ball bearing spring guide, a full steel gear set, a high speed motor, and a perfectly sealed cylinder. The A&K M4A1 Carbine also features a two-piece hop-up unit as well as a 6.04mm precision inner barrel, providing excellent range and accuracy. The M4A1 Carbine can easily hit targets at over 100 feet away!  

Overall, the A&K M4A1 Carbine AEG provides the best value for the lowest price on the market. With a solidly constructed full metal high performance gearbox this AEG is able to hold its own against some of its top tier AEG competitors. The A&K M4A1 Carbine provides great accuracy and hard hitting power in a compact carbine size platform. If you are looking for a lightweight CQB AEG, but can't afford the top tier price tag this is definitely the AEG for you!

- Impact resistant polymer body for maximum durability
- High performance metal gearbox and high speed motor
- 300rd high capacity magazine included
- Top rail for optics and accessories
- High performance AEG rifle, shooting at 300-320 FPS!
- Extremely durable
- Ready to go out of the box!

Operation:  Electric Automatic
Build:  Metal gearbox, rail, outer barrel / Polymer receiver
Firing Modes:  Semi-automatic and Full-automatic w/ functional safety
Muzzle velocity:  300-320 FPS with 0.20g BBs
Magazine:  300rd High Capacity (gear wind-up)
Gearbox:  Full Metal Version 2
Battery Type:  8.4V Mini
Rate of fire:  11 RPS (Rounds per Second) with an 8.4v battery
Hop-Up:  Adjustable
Weight:  7.5 lbs

Package includes:  A&K M4A1 Carbine, 300rd hi-cap magazine, rechargeable mini-type battery, standard wall charger, and cleaning rod

Ammo type:  Seamless 0.20g or heavier (0.23g, 0.25g, 0.26g, 0.28g, etc) BBs.  For maximum performance and accuracy, Airsoft Megastore recommends GoldenBall ProSlick BBs which carry perfect spherical consistency and density, available at Airsoft Megastore for the lowest price on the market, guaranteed.

Battery Charger Recommendation:  Although this fully automatic airsoft rifle comes with a standard wall charger to charge the battery, Airsoft Megastore recommends the use of a smart charger to avoid overcharging the battery(overcharged batteries may cause decreased airsoft gun performance and may shorten battery life significantly).  Smart chargers not only shorten charge time significantly (up to 800% faster charging), but more importantly,also automatically shut off once the battery is fully charged to avoid overcharged batteries.

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***** 4 / 5
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Product Reviews

5 A&K Airsoft M4A1 Carbine AEG Rifle - Full Metal Gearbox *****

"I got this almost a week ago. I got it sight in for 200 ft . it is really accurate. full metal outer barrel, charging handle buffer tube, front & back sight, buffer tube, and magizine. be careful with the bolt. i dont push it in because in order to release it, u have to shoot off a round. It pops out more then it is supposed to. the accuracy is amazing and its very powerful. the magizine it comes with has to be turned ten times more after the top bb comes all the way to the top. great fps and rof. so far no cons at all. MAKE SURE the mag is fully wound up before firing. Oh, and dont leave it in the trunk for 2 hours in 17 degree weather. I did and it didnt shoot the bb past 2 feet, and only shot on semi every 3 shots. once i got it home it was fine. not sure whats up whith that."

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5 A&K Airsoft M4A1 Carbine AEG Rifle - Full Metal Gearbox *****
Awesome Gun!

"I got this gun for Christ mas and it looked great. It feeds good too,and shoots good strait out of the box. I highly recomend this gun"

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5 A&K Airsoft M4A1 Carbine AEG Rifle - Full Metal Gearbox *****
To The Guy Below Me

"Yes of course it is fully automatic it is a M4A1 its standard to come with fully automatic. I just got this gun yesterday and it is amazing, but i would reccommend a 9.6 battery because the battery does not hold charge but for like an hour and im a big airsoft and paintball gamer."

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5 A&K Airsoft M4A1 Carbine AEG Rifle - Full Metal Gearbox *****
Great gun

"My friend has this gun and i must say i was jealous at first cuz its awesome for the price. He complained because it wasnt as powerful as he had hoped but I disagree and told him sometimes its not always about power (BUT IT SHOOTS 350 to 390 FPS!!!) its about consistency long/short range accuracy. Because some guns may pack a punch but are inaccurate and its about taking out your targets. But overall this gun does it all. To make make shoot higher although you dont need to get better a battery and use Golden Ball Proslick bbs or another type of premium bbs. Once he did that he stopped complaining and was on the same level as this gun. This is a must buy gun. "

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5 A&K Airsoft M4A1 Carbine AEG Rifle - Full Metal Gearbox *****
amazing gun

"this gun is great accurate over 100 feet it shoots really hard and has a very realisitic weight"

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5 A&K Airsoft M4A1 Carbine AEG Rifle - Full Metal Gearbox *****

"is this gun fully automatic too?????????"

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4 A&K Airsoft M4A1 Carbine AEG Rifle - Full Metal Gearbox *****
Good starter M4

"If your not sure what gun you want to get, get a M4. They are comfortable, easy to use, and easily upgradable. Now, about this gun. The A&K M4A1 is a solidly built. Everything fits together well but TM compatible Mags are a little loose. Although you don't need a sling the gun offers mounts for them which is a bonus. The removable carry handle with integrated rear site is not parallel with the barrel so you need to adjust the windage to its max setting to shoot straight. The hop-up also needs to be maxed out if you don't want your bbs to drop immediately. It is also a little weaker than stated. Also the stock battery does not last that long. That being said, the A&K M4A1 is great for cqb and is adequate for field play. The grouping on this gun is really good. The polymer receiver is lightweight and durable. Score: 4/5. If you are looking for a decent startup gun, this is a good choice. If you want a gun that you can upgrade at a later point, find a better gun because upgrades will be wasted on this gun."

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4 A&K Airsoft M4A1 Carbine AEG Rifle - Full Metal Gearbox *****
Questions Answered

"Full metal body: Yes to include gear box and the 300 cap magizine. Also includes a spare metal (oranged colored) flash compressor. AKA: The orange tip thats required by law. Auto: Yes and works like a charm. Asstated in the first post and Airsoft mega store recommends the 9.6 rechargable battery. The one that comes with the rifle works but for short term. I ue the 9.6 and keep the original battery with me as a back up during field play. Awesome deal with this rifle and CAN be upgraded with accessories. Get it now while the winter price is active!! I gave a 4 of 5 stars. Only because i needed to get the 9.6 battery. If it came with said battery, this would be a easy 5 star rating. :)"

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4 A&K Airsoft M4A1 Carbine AEG Rifle - Full Metal Gearbox *****
good gun

"this gun is great a little weaker then i thought but good gun. i would get it was worth my money i like to have back yard battles and every one wants to be on my side again great gun"

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4 A&K Airsoft M4A1 Carbine AEG Rifle - Full Metal Gearbox *****
to the guy below me

"dude, r u serious?? of course its automatic y the hell would it be semi? common sense dude"

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3 A&K Airsoft M4A1 Carbine AEG Rifle - Full Metal Gearbox *****
It's OK

"I got the gun a week before I was going out to play a game with my friends. Out of the box, the gun wasn't shooting, and the bolt catch was broken. So I sent it back, missed out on a game, and waited for another 3 weeks to get a new one. I got the new one in the mail, and the bolt catch STILL Andes up breaking a few days later. AND to go along with it, the gun ACTUALLY has a bend. The gun is seriously bent from the stock to the barrel, there is a noticeable bend. Along with that, the rail ontop of the gun came OFF the gun. Not the best gun you can get for the price. That's for sure. Maybe I got a bad gun, but I got the same problem on two different guns, so if you want to buy your first gun, I'd buy a different gun that was maybe more high-end than this. The bolt catch wouldn't be that bad of a problem if the HOP UP wasn't in there, but whatever."

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3 A&K Airsoft M4A1 Carbine AEG Rifle - Full Metal Gearbox *****
Great Gun, Bad service

"!Ok this gun is great it has a nice speed its accurate and it hardly never gets jammed but when I came to the shipping and handling part of checking out I tried to get 3 day shipping and it was 73.97! I then decided to get ups ground shipping cause I thought it would go faster than USPS and it to 7 business days and 10 full days to get to my house it was pretty lame to have to go through the mess but I can't confirm if it was air soft megastore's fault but there has to be some problem with the system. Conclusion: don't use ups shipping!"

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I ordered a gun sling a couple weeks ago. Unfortunately, one of the clips broke. After a few email correspondings with a customer service representative named Jun (my emails did not show a last name), AMS sent me a replacement sling for free. I did not even have to send my clip back. AMS is a terrific store and I plan on doing more business with them. They were polite, efficient, and just a pleasure to work with. I would recommend Airsoft Megastore to anyone. mskanwischer, USA
Airsoft Megastore is The Best Airsoft Website Out There (I Think) and i Will Always Be Loyal to AMS and Order Almost All of my Gear From Them. The Customer Service is Also Amazing, Jun my Customer Service Representative Has Helped Me With Anything i Needed Help With, Especially My Order Problem (Had 2 Magazines Missing from Order) and Jun Helped Me With The Problem, and Now The Mags Have Been Shipped To Me. Thank You So Much AMS and Jun. Ethan1214, Saskatchewan, Canada
I love that Airsoft Megastore has videos of most any information you will need to learn and care for your products. I purchased an AEG for my son and in short order, unfortunately, it began grinding after brief use. I emailed for warranty repair with symptoms and with 24 hours (22 to be exact) I received an email explaining possible causes with a video like for tuning the gun. I had the gun working again within 15 minutes, avoiding returning the gun and the mess associated with returns\repairs. Excellence on Sean's part to help out a first time customer of theirs. Highly recommend. bucfanjeff, USA
Everything worked great, shipping was super fast. I am very pleased and won't hesitate to order through airsoft megastore again. rob_riley, USA
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