$20 off over $75
Finish Build

Add Essentials

Select from the compatible essentials you need from the list below.

Choose your warranty to complete checkout

Weapon Shield 90

  • EXTENDED Industry Leading 90 Day parts and defects warranty
  • Covers for all repair work
  • Comprehensive Tech Support
  • Priority processing time, Ships within 1 business days
  • Shipping Insurance
Add & Checkout

Weapon Shield Extended 135

  • TRIPLE EXTENDED Industry Leading 135 Day parts and defects warranty
  • Covers for all repair work
  • Comprehensive Tech Support
  • Priority processing time, Ships within 1 business days
  • Shipping Insurance

+ Tech Inspection

  • FPS Chronograph Certification
  • Gearbox Cleaning
  • Gearbox Lubrication
  • Fuse Replacement
Add & Checkout

AMS Standard 45

  • Industry Leading 45 Day parts and defects warranty
  • Covers for all repair work
  • Comprehensive Tech Support
  • Standard processing time, 1-2 business days

AMS Proshop Warranty Options

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.

We suggest that anyone investing in a gun from our custom proshop purchase a weapon shield protection plan. There's no sense in spending your hard earned cash on something this awesome and then be at the mercy of the manufacturer's limited parts warranty. Purchase a weapon shield plan, 90 or 135 day plans to protect your airsoft investment. Our 135 day plan includes an inhouse tech service that you have 135 days to use. Our techs will do a clean up that should keep your airsoft investment running like the day you got it. All Weapon shield customers are prioritized for order processing as well as other services. Join the our satisfied Weapon Shield customers today!

Customize It!
On Sale: Ending Soon!
product image

Airsoft Megastore Armory Metal AMR-4 RIS EBB AEG w/ MOSFET - BLACK

Get Free Shipping

  1. 1. Buy Any Regular Priced Item
  2. 2. or, Buy Any Sale Item + Any Non-Sale Item
  3. 3. or, Any Order Over $150
Free Shipping
$139.95Guaranteed Lowest
  • Muzzle Velocity: 380 FPS
  • Build Material: Metal Receiver, Rails
  • Weight: 6.83 lbs
  • Overall Length: 33" in.
  • Inner Barrel: 370 mm
  • Battery Type: 8.4V Nunchuck
  • Gearbox: Version 2 (Metal)
  • Magazine Capacity: 300 rounds
  • Color: Black
customize it!


3 Ways to get Free Shipping

  1. 1. Buy Any Regular Priced Item
  2. 2. or, Buy Any Sale Item + Any Non-Sale Item
  3. 3. or, Any Order Over $150
Free ShippingThis item qualifies for Free Shipping

Must Haves

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

Tactical Gear

Tactical Vests

Upgrades and Add-Ons

Flashlights & LasersOther AccessoriesScopes and OpticsTactical Foregrips
  • Details
  • Ratings & Reviews

Introducing A.M.A. (Airsoft Megastore Armory) AEGs:
Airsoft Megastore Armory AEGs are designed from the bottom up with one goal, to provide airsoft players with the most realistic and fully upgraded premium performance AEGs for the best price. We feel that we have succeeded in our mission with our line of full metal electric blowback, factory upgraded, and MOSFET enhanced AEGs.

Our Airsoft Megastore Armory AEGs are a step above other AEGs on the market, providing a high degree of realism combined with superior accuracy, power, and range. We take such pride in our Airsoft Megastore Armory AEGs, that we have emblazoned the A.M.A. logo on each lower receiver. Each A.M.A. AEG is thoroughly inspected and tested to ensure the highest level of performance. Welcome to the Airsoft Megastore Armory, where serious airsoft players load up. Your weapon is waiting!

Performance Guarantee:
All Airsoft Megastore Armory AEGs are built to outperform and outlast the competition, which is why we cover our entire line of A.M.A. AEGs with an industry leading 60 day limited warranty. Our warranty covers your AEG for twice as long as most “premium” brand airsoft manufacturers, because we know our guns are built to last. Ten to thirty days is never truly enough time to really field an airsoft rifle and ensure that it is problem free, which is why our extended 60 day limited warranty is designed to provide you with ample time to test our AEGs’ quality and performance. At the Airsoft Megastore Armory, our first priority is your satisfaction!

The AMR-4 RIS is the railed version of the standard M4A1 platform, featuring a rugged full metal hand guard rail system providing plenty of space for attaching a variety of tactical accessories.  With a sleek modern design and internal modifications and upgrades, the AMR-4 RIS truly stands out in the crowd of other railed M4 AEGs. Featuring a rugged full metal body for an authentic feel, and a powerful electric blowback system, this AMR-4 RIS is one of the most realistic M4 AEGs on the market!

Battle Ready Exterior:
From the barrel to the buffer tube, the AMR-4 RIS is built from solid and extremely durable metal with a full metal railed hand guard, and a nylon polymer motor grip and stock. We have included a functional locking charging handle to provide quick and easy access to the hop up unit, and a functional bolt release that slams the mock bolt home when pressed. The rugged lower receiver features the exclusive A.M.A. logo as well as an individualized serial number.  One of the more intuitive features of the AMR-4 RIS is its large railed hand guard, which provides plenty of space for storing most NiMH and LiPO nunchuck style batteries, making it easier than ever to swap batteries while on the field.  With a full rail interface system, the customizable opportunities are endless, and allows you to easily swap out different equipment for all types of scenarios.  The full metal chopped rear sight is fully adjustable for windage and elevation, and is also removable, exposing a long optics rail on top of the full metal upper receiver. Unlike standard railed M4 AEGs, the AMR-4 RIS features an ergonomic textured motor grip and a contoured trigger guard to relieve hand fatigue. The six position retractable nylon polymer stock is also ergonomically designed, with a rubber butt pad and larger cheek rest. It also features a small lower compartment for storing extra accessory batteries, and a bottom sling swivel. The overall external construction of this Airsoft Megastore Armory AMR-4 RIS AEG rivals top of the line AEGs, but with an exclusive and unique look that is sure to turn heads!

Revolutionary Upgraded Internals:
We have taken one of the best electric blowback Version 2 gearboxes on the market and further enhanced it by adding top of the line internal components as well as low resistance silver core wiring and an enhanced MOSFET! A MOSFET wired AEG for under $250.00 is virtually unheard of in the airsoft world, let alone an upgraded electric blowback full metal AEG! The Version 2 electric blowback gearbox features 7mm metal bearings, a bearing spring guide, a bearing piston head, a full metal air nozzle, and a powerful M120 spring! To enhance the range and accuracy of the AMR-4 RIS, we also included a 6.03 stainless steel tight bore inner barrel, giving it pinpoint accuracy and making it easily capable of hitting targets at 150 feet! The electric blowback feature of the AMR-4 RIS is crisp and loud, and provides a small but noticeable amount of recoil which adds to the realistic feel and performance of this AEG. No other stock AEG on the market comes with all of these features and upgrades installed and ready to go right out of the box! The AMR-4 RIS truly is one of the most advanced AEGs available on the market, and priced well below most “premium” airsoft guns.

Incredible Value:
At Airsoft Megastore, we are committed to bringing you the best products on the market for the lowest possible price, which is why we developed our Airsoft Megastore Armory line of AEGs. Our A.M.A. AEGs built for high octane performance with an upgraded electric blowback gearbox, a factory installed MOSFET, a tight bore barrel, and full metal construction, and priced well below other “premium” AEGs. Not only do our AEGs have more out of the box upgrades and features than most “premium” brand AEGs, they also feature an industry leading 60 day limited warranty!

- Full Metal Construction (with Nylon Polymer stock, & motor grip)
- Full Metal Railed Hand Guard with Mil-Spec numbering
- Electric Blowback Version 2 Full Metal Gearbox
- Low resistance silver core wiring
- Enhanced MOSFET installed
- 6.03mm tight bore inner barrel
- 7mm Gearbox bearings
- Bearing spring guide & piston head
- Functional, locking, charging handle and bolt release
- One piece plastic hop-up
- Removable chopped rear sight
- Top optics rail on upper receiver
- Front & rear sling mounts
- Functional Safety
- Individualized serial number laser engraved on each lower receiver

Tech Specs:
Operation:  Electric Automatic, Electric Blowback
Build:  Full metal body, full metal gearbox (polymer hand guard, stock, & grip)
Firing Modes:  Semi-automatic and Full-automatic w/ Blowback
Muzzle Velocity: 360-380 FPS with 0.20g BBs
Magazine: 300-round high capacity (gear wind-up)
Gearbox:  Full metal EBB Version 2
Inner Barrel:  370mm, 6.03mm Tight Bore
Outer Barrel Threading: CW (Clockwise)
Battery Type: NiMH or LiPO Nunchuck Battery
Hop-up:  Adjustable Version 2 One Piece
Weight:  6.83 pounds
Overall Length:  33" in.


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.

This Airsoft Megastore Armory AEG DOES NOT come with a battery or charger.  CLICK HERE for our VB Power Battery & Smart Charger Combo Package!

Package includes: Rifle, instruction manual, 300-round high capacity magazine

Battery Charger Recommendation: 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.

Airsoft Megastore Armory Metal AMR-4 RIS EBB AEG w/ MOSFET - BLACK Categories:

GUN FORGE - Custom Built by AMS Customers

People Also Viewed

More From Airsoft Megastore Armory

Write A Review

  • Please do not use the review feature to ask questions. Any reviews containing questions will not be answered, and will be deleted
  • Please keep your review clean of obscenities and other distasteful content
  • Please be detailed in your review, and talk about what you like/dislike about this product
  • Click here to review submission guidelines.


***** 3 / 5
Based on 11 Review(s)
  • (3)
  • (5)
  • (1)
  • (2)
  • (0)
Write Your Own Review

Product Reviews

5 Airsoft Megastore Armory Metal AMR-4 RIS EBB AEG w/ MOSFET - BLACK *****
Best gun I've ever seen, or owned.

"By far, this is the best AEG you can get for your money. Pros -Incredibly durable body, made EXTREMELY well -Tons of rails -Crazy High RoF (I use a 9.6v) -Great fps -Accuracy is beyond real. The 6.03 really shows, my iron sights are perfect and the bb literally flys perfectly straight with .2g's. All you need to adjust is hop up. -EBB is nice, and the gun is pretty loud from it. -Stock is very easy to adjust. -The battery is a breeze to put in compared to those that use crane stocks. It goes in the rails, and nunchuck batteries fit best with plenty of room and no overly bending wires. Great design. -Mag fits in really well -MOSFET-enough said Cons -You're going to have to restrain your yourself, otherwise you'll end up buying 5. Compared to the G&G Raider XL which I also have that was the same price, this is a much better value by far. Everything the G&G does this gun does better. "

Was this review helpful to you?
5 Airsoft Megastore Armory Metal AMR-4 RIS EBB AEG w/ MOSFET - BLACK *****

"Great gun! accurate, consistant, and loud. only bad thing i can even say is that when i bought it i didnt relize it didnt come with a battery so i had to wait to acutaly try it but after shooting I love it!"

Was this review helpful to you?
5 Airsoft Megastore Armory Metal AMR-4 RIS EBB AEG w/ MOSFET - BLACK *****
Great gun

"This is the best air soft gun i have had in my entire 3 year air softing carrier. I have gone through many guns and this is my favorite one so far. PROS: DEAD ON ACCURACY! Great FPS (9.6v), blow back, full metal. CONS: a tiny bit of wobble in the mag well (but that's true for most guns). You might need a peq box with this gun or get a butterfly/nun-chuck battery its a tight squeeze but i got mine to fit (goes in the ris). Lastly I was playing around with it watching the blow back and sometimes it doesn't close all to way so I pulled the bolt back and I heard a snap and the slide wouldn't move so i shot it to see if it would close from the blow back and from now on my bolt is a tiny bit loose but i still works. BUY THIS GUN"

Was this review helpful to you?
4 Airsoft Megastore Armory Metal AMR-4 RIS EBB AEG w/ MOSFET - BLACK *****
good gun!!!

"The MOSFET feature on this gun is amazing. With the 8.4v 1600mah battery it comes with it always out last everyone elses gun because of the MOSFET. Ive played several games so far and my battery hasnt died once and the games were 4+ hours long. The gun is extremely solid. In the video they say the gun has mag wobble but when i got this gun they put a piece of velcro in the mag well to stop the wobble and it works perfectly. The gun is CW barrel threading so it is alittle harder to find a flash hider that wlll work with it since mostly all airsoft guns have CCW barrel threading. The only bad part is field striping the gun, its harder to field strip then a regular m4 but its not that big of a deal. "

Was this review helpful to you?
4 Airsoft Megastore Armory Metal AMR-4 RIS EBB AEG w/ MOSFET - BLACK *****
Great Gun! Has some flaws, but what doesn't?

"Let me start of by saying what many others have. This is a great gun for the money you spend. It has a lot of extras that you don't typically see on a stock gun is this pricerange. The MOSFET is a perk, and helps when you're using LiPo batteries, since it's LiPo ready. However be warned. LiPo ready just means that the gun is wired with a LiPo connector. DO NOT use 11.1 LiPo batteries without upgrading the piston! Stripped mine out, so I had to swap it. Some of the wiring is very thin, and easy to damage if you get into your gun, but if you're just using the gun, it's surprisingly durable. Decent RoF, but nothing to write home about, unless you're using an 11.1 LiPo, which has it's issues as I said before. Haven't tried it with a lower voltage LiPo, but it may be better than a standard 9.6 NiMH. This gun is impressively accurate, dead on up to about 150ft, but you've got a decent shot up to about 200. The blowback is awesome. It does use a bit of extra battery life, but the gun no longer has the typical motor noise, and instead has a satisfying metallic 'clack' every time you fire. If you have any issues with the slide not closing all the way, switch to semi auto and fire a shot, this will complete a full cycle, and close the slide. I've had some difficulty with mid-cap mags, not lining up enough to feed BB's, but while I haven't done it yet, I imagine it could be fixed with a strip of velcro to put pressure on the mag as stated in another review. Make sure you like the sights built in to the gun, or be prepared to buy raised rails for the gun, as the front sight sits right in the way, and can't be removed. It helps hold the rails in place. Overall, despite some of the flaws the gun has, if I was to buy another gun in this pricerange, I'd pick up another of these without any hesitation. Also, I'll add that my first gun was DOA, however Airsoft Megastore was fantastic with getting that resolved. I called them, and they walked me through a lot of troubleshooting on the phone all the way down to removing the motor. I believe what happened on that was a stripped piston, and a disconnected motor wire. Not difficult fixes, but they replaced my gun without any questions. Their customer service is fantastic, as is their support/troubleshooting dept. I like the selection of parts on some other sites better, but I keep coming back since they are so good to work with, and have a great warranty."

Was this review helpful to you?
4 Airsoft Megastore Armory Metal AMR-4 RIS EBB AEG w/ MOSFET - BLACK *****
ama 4ris

"Well after a defective battery destroying my piston the AMR-4 RIS is by far the best gun i own it shoots nice and has the amazing blow back feature i love to use this gun and it is totally customizable it handles great i only have 1 problem i have a less than great hop up but i plan on getting a new one anyway hope i helped thanks again for my great rifle!"

Was this review helpful to you?
4 Airsoft Megastore Armory Metal AMR-4 RIS EBB AEG w/ MOSFET - BLACK *****
Not Bad

"I have been fielding this gun for about 8 months now. Pros: Accuracy is respectable up to about 150ft. Good metal parts. The plastic parts are very solid. EBB was nice, i disabled it because it eats battery life. I really like the fact the bolt locks back that is very useful on the field. Fps is good, mine chronos at around 350-360. I like that fps because I can use it for cqb comfortably. Rof is also not bad. MOSFET is a great thing to have on a a gun standard! Although im not a big fan of front wired AEGs this one is not bad at all, the RIS is rather large and allows a good amount of space for the battery(use nunchuck) I would recommend using .25s for this gun. Cons: first thing that happened that i didnt like was occasionally the selector switch doesnt fully engage, (will cause random 3 rd burst on semi) overall this wasnt a big deal to me because i fixed it. The mag has an uncany amount of wobble, but this was fixed with a little more velcrow. I have also noticed that the stock doesn become loose at times but is easy to fix by taking the stock off and tightening the screw inside the buffer tube. CW threaded barrel is a little harder to find suppressors for but not a big deal. And finally the RIS is a loose, but can be fixed by tightening the front RIS reciever. Overal i would recommend this gun, the problems it has are somewhat normal for AEGs. the price is reasonable. I would recommend this gun."

Was this review helpful to you?
4 Airsoft Megastore Armory Metal AMR-4 RIS EBB AEG w/ MOSFET - BLACK *****
Overall good-some flaws

"When first opening this gun I was amazed by the external construction of it. All metal except the (really nice) pistol grip and (really nice) stock. (those are VERY strong polymers) The gun's externals overall get an A++ from me. Now the internals had many very good componants, like the metal air nozzle. It did have several flaws. Firstly the wiring, (which is silver core, another plus) isnt secured by a wiring harness in the gun, making it very very easy for a wire to get caught in the blowback system, to get smashed by the air nozzle, or get crushed by the hop up unit. But as long as your careful that can be avoided. The biggest problem is surprisingly the MOSFET. There are a couple ways to wire a MOSFET, but only one is actualy reliable, the rest are prone to failure. Sadly, the MOSFET in this gun is not wired properly, and within me firing 100rds it gave out (running 9.6 volt battery) Since then I had the MOSFET properly rewired and it works like a charm. When this gun is working it performs amazingly; great trigger response, 300ft range (with 550mm long 6.01mm barrel and SHS bucking), and will hit around 180ft accuratly stock. So I give this 4 stars because of its outstanding external build quality, and many good internal parts, but the faulty MOSFET and the lack of a wiring harness."

Was this review helpful to you?
3 Airsoft Megastore Armory Metal AMR-4 RIS EBB AEG w/ MOSFET - BLACK *****
oaky but not full metal gear box

"after having this gun for a few months i noticed the ebb was not working and when i shot the gun was making a weird noise. so i opened it up only to find that the piston had shredded because it was plastic and so was the piston. I was using high quality GoldenBall bb's and a high quality battery and did not make any changes to the gun. i also noticed that the piston remains had jammed the gears in such a way that it was rendered useless. the gun itself is a work of art, and i highly recommend it but be prepared to spend money upgrading parts"

Was this review helpful to you?
2 Airsoft Megastore Armory Metal AMR-4 RIS EBB AEG w/ MOSFET - BLACK *****

"First airsoft gun I have ever owned and will never buy another 10 shots doesn't work now I have to pay a shop to replace wires that have been ruined due to poor design. Gun looks and feels awesome but then you fire it =( Unless your good with fixing airsoft equipment I would pass on this item"

Was this review helpful to you?
2 Airsoft Megastore Armory Metal AMR-4 RIS EBB AEG w/ MOSFET - BLACK *****

"This gun on first impression feels great. However The gun has a major flaw. A week after purchase the blow back feature cut a wire to the mosfet in half. There are 2 of these wires and they are both very thin so thin you could break them with your fingernail. After repairing it it worked fine. Then about a week afterwards the blow back slide cut the other wire in half. How it did this i do not know because the wires should have been nowhere near it anyway. After working on it 2 hours no amount of soldering, tape, or wire connectors could fix the wires were they would fit in the gun correctly and hold firm. My suggestion is buy a name brand gun not a house brand. Other cons: Dust cover wont stay up. The charging handle will fall out on its on. The blow back hangs the bolt in the open position. As you walk around the Gun "drips" BB's 2 or 3 at a time every time you put the barrel straight down. And lastly the Bolt catch jams and wont work."

Was this review helpful to you?

Free Shipping No Minimum*

45 Day Warranty

110% Lowest Price Guarantee

Best in Class Customer Service

Same Day Will Call Pickup

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
Be our next fan! We are focused on long lasting customer relationships. Try us out. Find out why everyone is raving about AirsoftMegastore.com Your Name, Your Location

Real People. Real Airsoft