420 FPS A&K Full Metal Airsoft M4A1 Carbine AEG - Full Metal Gearbox

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Model: M4
Muzzle Velocity: 420 FPS
Build Material: Metal Receiver, Barrel
Weight: 6.25 lbs
Overall Length: 29.5" in. / 33" in.
Inner Barrel: 363 mm
Battery Type: 9.6V Mini
Gearbox: Version 2 (Metal)
Magazine Capacity: 300 rounds
Color: Black
Product Code:

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    Our take:  The NEW A&K Full Metal M4A1 Carbine AEG is part of A&K's new line of completely redesigned, performance oriented, metal body AEGs. These NEW A&K AEGs are built to the same performance standards as other top tier airsoft guns costing nearly twice as much.  These A&K AEGs not only feature top of the line performance in a durable metal body, but also include everything you will need to start using the rifle! The A&K M4A1 Carbine includes a 9.6v battery, a standard wall charger, a 300rd high capacity metal magazine (feel free to go for the A&K 5000-round M4 AEG Magazine Box), and a metal replacement flash hider! The M4A1 Carbine AEG packs a huge punch in a maneuverable and compact size, shooting consistently over 400 FPS! 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 150 feet! The M4A1 Carbine AEG features a full metal upper and lower receiver, a full metal outer barrel, full metal front and rear iron sights, and full metal top rail. The only plastic components on the rifle are the retractable stock, textured hand guard, carrying handle, and the motor grip. The A&K M4A1 Carbine's construction is extremely durable, and has a realistic weight and feel.

    The new A&K Full Metal Body M4A1 Carbine has a redesigned and reinforced metal gearbox with a factory installed M120 spring (Airsoft Megastore also carries aftermarket springs like the SHS X-Mod M120 Gearbox Spring), making it one of the hardest hitting stock, metal body AEGs on the market! The full metal gearbox features metal bushings, a metal ball bearing spring guide, a full steel gear set, a high torque motor, and a perfectly sealed cylinder. The A&K M4A1 Carbine also features a full metal 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 150 feet away!  

    Overall, the A&K Full Metal M4A1 Carbine AEG is one of the best metal body M4's on the market, under $250. With solidly constructed full metal externals and a reinforced high performance gearbox, this AEG is able to hold its own against some of its top tier AEG competitors. The A&K M4A1 Carbine AEG provides great accuracy and hard hitting power in a compact size. If you are looking for a top performing full metal AEG, but can't afford the top tier price tag this is definitely the AEG for you!

    - Metal body (full metal upper & lower receiver)
    - High performance/ High Torque full metal gearbox and motor
    - 300rd Metal high capacity magazine included
    - Realistic weight and feel
    - Top rail for optics and accessories
    - Extremely hard hitting (Shoots over 400FPS!)
    - Extremely durable
    - Ready to go out of the box!

    Operation:  Electric Automatic
    Build/Body:  Full Metal Upper & Lower Receiver, Barrel and Buffer Tube
    Gearbox:  Full Metal Version 2 Gearbox
    Firing Modes:  Semi-automatic; Fully Automatic
    Overall Length:  29.5" in; 33” in. (Retracted/ Extended)
    Outer Barrel Length: 14.5” in.
    Inner Barrel Length:  363mm
    Inner Barrel Diameter:  6.05mm
    Hop-Up:  One Piece Adjustable
    Magazine Capacity: 300rd High Capacity magazine
    Caliber:  6mm Airsoft BB
    Muzzle Velocity:  380-420 FPS (w/ 0.20g BBs)
    Rate of Fire:  13+ RPS (Rounds per Second w/ 9.6v Battery)
    Weight:  6.25 lbs.
    Power:  9.6V NiMh Mini Battery

    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.

    Package includes:  A&K M4A1 Carbine, 300rd metal hi-cap magazine, 9.6v 1200mah mini battery, standard wall charger, and cleaning rod

    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

    Awesome gun
    By: Luke

    "Got this gun is awesome shoots freaking hard I used it in a war and kicked but thanks airsoft megastore"

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    By: Brian


    got this gun as a back up weapon and have now switched to this gun as my primary weapon. was running with the JG M4 s system but this gun is lighter and feels better. Added a new front RIS system and a red dot and also switched out the piston (metal) and piston head, this gun is now far better than my JG. FPS is good and accuracy is great. Great price for a great gun. Get this gun!!!!!!!!!!!!!!!!!
    AMS CS: 
    Hey! Thank you for the review. Check out the AMA 7-INTENSITY AIRSOFT RED DOT SCOPE!

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    Awesome gun!
    By: SWAT

    "Allright, let me start off by saying I got this 2 days ago and played with it yesterday, when I got there they told me let:s chrono it. When we did it it was 404,25 fps with 0.25 g bb's. I don't use 0.20 g bb's because it goes sometimes with the wind but it shoot so fast even with the 0.25 g bb's. So let me just say I recommend you buy this gun"

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    Good Gun
    By: Quinn

    "Pros This gun is great all around it shoots really hard and accurate and its very solid. Cons The way you have to put in the battery is hard at first but i got it now and the orange tip of the gun it a cheap plastic and my sling didn't want to hold my gun at one point and the tip shattered."

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    By: Dylan

    "This is a great hard hitting gun. It is very sturdy, fast, and accurate. The battery is a little tricky to get in but once you do it a few times it gets easier. This gun is very accurate, I shot a 3 inch pole about 150 ft. away from where I was shooting. I recommend this gun to anyone looking to have fun outdoor battles!"

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    pretty frickin good
    By: OldManAirsoft

    "When i first opened the box, i stared in awe. It is a beautiful gun. Very fast and hard hitting. My only complaint is the battery. It is so hard to put the battery into the underbarrel(at least for me). I personaly modified my gun to where the battery is on the outside. But overall if you are looking for a sturdy, fast shooting, reliable gun, this is the gun for you!"

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    pretty frickin good
    By: OldManAirsoft

    "When i first opened the box, i stared in awe. It is a beautiful gun. Very fast and hard hitting. My only complaint is the battery. It is so hard to put the battery into the underbarrel(at least for me). I personaly modified my gun to where the battery is on the outside. But overall if you are looking for a sturdy, fast shooting, reliable gun, this is the gun for you!"

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    By: Jacob

    "this is a great sturdy gun i love it buy buy buy"

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    By: steven salivonchk

    "This gun is so powerful at 420 fps and it shoots really fast my friends are going to be really scared of this gun when I show them this. It is amazing."

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    Pretty good
    By: Matt

    "So, an honest review. The gun out of the box was decent. Everything working alright. The battery was a little tough but after practicing putting it in, I got better at it. The gun was shooting pretty fast and the battery was holding charge well. And then... it stopped shooting. The trigger was hard to pull and was making a loud clicking noise. I was working then not working. All in all.. hopefully it gets fixed. Pros: `Full metal `Good rof `Good fps `Sturdy `Comes with battery and charger `Accurate Cons: `Trigger feels wierd `The included mag makes it jam `Jams with other mags also `Battery is a pain `No rails"

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    The store is amazing. I have found there items that I could not find in other stores which makes it the best. I have made questions and inquires about products and the customer service has responded super fast with accurate answers. All my products have arrived in excellent conditions in spite of other stores. My last product came late because it was rescheduled but that was UPS fault I think. I would like to thank Matthew for his exceptional customer service. Whenever you need help, please try to contact him. My advice, buy in Airsoft Megastore, they have coupons and the widest variety of airsoft products. RandyLoy, USA
    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
    I loved buying from airsoft megastore because the employees helped me recover my tracking number and told me where the package was at, I would love to buy from airsoft megastore again! Battlefield4Rule, USA
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