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Weapon Shield 90

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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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King Arms Licensed COLT M4 RIS Carbine Airsoft AEG Rifle

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  • Model: M4
  • Muzzle Velocity: 410 FPS
  • Build Material: Polymer Receiver, Metal Rails
  • Weight: 5.75 lbs
  • Overall Length: 30" in. / 33.5" in.
  • 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

Tactical Gear

Tactical Vests

Upgrades and Add-Ons

Flashlights & LasersOther AccessoriesScopes and OpticsTactical Foregrips
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Our take:  The All-NEW and Fully Licensed King Arms COLT M4 RIS AEG rifle is perfect for serious airsoft players that demand top-of-the-line performance, without a top shelf price tag.  This new M4 RIS AEG features the same premium hard hitting internals found in all of King Arms’ full metal M4 AEGs, at a price that nearly every airsoft player can afford.  By using rugged nylon reinforced polymer receivers instead of the heavy original full metal receivers, King Arms was able to drastically reduce the price of their most highly sought after M4 AEGs.  Don’t be fooled by the lack of a full metal body, as the new nylon polymer receivers are nearly just as durable and incredibly lightweight.  This complete AEG package is an incredible value, including everything you need to field the rifle right out of the box.  A high quality AN/PEQ-15 replica external battery box is also included, giving this airsoft M4 a truly aggressive and tactical look.  Don’t miss out on this incredible package deal for one of the best designed airsoft M4 AEGs on the market!

Rugged External Construction
The NEW King Arms M4 RIS AEG is modeled after the real steel Colt carbine used by nearly every U.S. military branch and police department, and is widely known for its versatility and modular capabilities.  Fully licensed Colt trademarks, licensed by Cybergun, can be found throughout the rifle, adding to its authentic look and aesthetic appeal.  King Arms has installed a high grade CNC machined aluminum hand guard rail system on this M4 AEG, providing plenty of space for attaching tactical accessories such as fore grips, flashlights, lasers, optics, and even grenade launchers!  The included standard carry handle can be easily removed, exposing a long top optics rail, which is perfect for attaching scopes and red dot sights.  Perfectly adapted for both close quarters and long range combat, this M4 AEG includes a retractable LE stock which allows you to quickly transition between different environments.  Adding to the overall tactical appearance of this AEG is the included replica PEQ battery box, which can fit most mini size batteries and mounts securely to the aluminum rail system.  

High Performance Internals
Carrying full Colt trademarks, this AEG features King Arms precision crafted full metal 7mm bearing Version 2 gearbox with premium internal components, firing at 400 FPS with 0.20g BBs right out of the box.  Also included with this AEG is a full metal adjustable hop up unit and precision inner barrel, providing it with much better range and accuracy than nearly all other plastic body AEGs on the market.  King Arms’ factory installed high-torque motor further adds to the performance and value of this M4 carbine, easily driving the high powered gearbox and providing a fast rate of fire.  This licensed Colt M4 is one of the best built polymer body AEGs on the market, with unparalleled reliability, premium internal components, and top tier performance.

Incredible Value
The all-new, full metal COLT M4 RIS Carbine with fully licensed COLT trademarks manufactured by legendary Airsoft manufacturer KING ARMS is one of the most solidly built rail equipped M4s available at this pricing point.  Designed with reliability and performance in mind, this King Arms COLT M4 RIS packs a SERIOUS punch and is extremely realistic to boot, weighing in at over 6 POUNDS with solid construction all-around.  Previously only available in Europe, this model is now available in the United States for the lowest price on the market courtesy of Cybergun.   Pick up one of these premium King Arms AEGs today, at the guaranteed lowest price on the market and backed by Airsoft Megastore’s leading 125% Price Match Guarantee.

Operation:  Electric Automatic
Build:  Impact-Resistant Nylon Polymer, Metal Barrel, Metal Buffer Tube, Metal Gearbox/Internals
Firing Modes:  Semi-automatic and Full-automatic
Muzzle Velocity:  370-410 FPS w/ 0.20g BBs; 450-490 FPS w/ 0.12g BBs (for demonstration purposes only, DO NOT USE 0.12g BBs in this Airsoft rifle!)
Magazine:  300-round high capacity (gear wind-up)
Gearbox:  Full metal w/ high performance components
Hop-up:  Full Metal; Adjustable
Weight:  5.75 pounds
Length:  33.5” in. (extended); 30” in. (retracted)
Inner Barrel Length:  363mm
Battery Type:  Mini Type 8.4v 1100mah

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:  Rifle, instruction manual, unjamming rod, 300-round high capacity magazine, 8.4v mini-type rechargeable battery, standard wall charger, Replica AN/PEQ-15 Battery Box,

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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***** 3 / 5
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Product Reviews

5 King Arms Licensed COLT M4 RIS Carbine Airsoft AEG Rifle *****

"I bought this gun for myself and the first thing that I noticed was the realism to it. I shoot a real M4A1 colt and its weight is just a bit short but size is right on!!! Be aware the gun will jam sometimes if kept on semi to long but to fix this is as simple as switching to full auto. If you buy this gun it will be a shame not to hook it up with vertical grips and flashlights and lasers etc. All in all, this gun is the best. Fps is insane ( more than a gas M4), shoots .2gram bbs and above, and will really leave your enemies with a strict memory of you on the airsoft field!!! NOTE: When gun is first unboxed it should not be charged with a smart charger but with the standard wall charger for about 3hrs. This happened to me and the gun only got of 30 shots. Charging it with the wall charger will jump start your new battery. HOPE THIS HELPS!!!!!!"

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5 King Arms Licensed COLT M4 RIS Carbine Airsoft AEG Rifle *****
great buy

"best air soft gun ever made iv had no problems with it at all"

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4 King Arms Licensed COLT M4 RIS Carbine Airsoft AEG Rifle *****

"This is my first airsoft gun. I abosolutely love it. The one thing I don't like about it is the way the battery it came with has to be mounted in a container on the rail. I will try butterfly battery in the rail to see if that works. The gun shoots really well. It is very acurate with my.20g ammo. Took it to church and my friends are asking me to order for them. I did get a red dot scope which makes shooting even better. My wife and 15yr old daughter shot it and are also hooked. Now I have to order two more guns. Do yourself the favor and order a better battery, charger, extra magazine, and a fore grip."

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4 King Arms Licensed COLT M4 RIS Carbine Airsoft AEG Rifle *****

"This is pretty good gun. Metal barrel,and metal hand guard. The battery it comes with does not fit inside this rifle. You will have to use the battery box to mount it on top. It got stuck on semi and full auto for a few moments like it was on safety. But that isn't a big problem. (Hopefully). ABS polymer impact resistant body. This gun seems pretty good. So I would probably get it if I were you. But if you want you can get an EBB ak for that price. But this gun is great. The hand guard is kind of hard to get open though."

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1 King Arms Licensed COLT M4 RIS Carbine Airsoft AEG Rifle *****
Terrible.. supposed to be a "PRO" AEG.. NOT

"Got this gun as my first gun.. It just came in yesterday and also ordered a lot of other things for the gun.. Well I used the wall charger it came with for 3 and 1/2 hours like the directions said and even topped it off with the smart charger I bought for another $30.. I took it out to shoot with all of my friends and it literally shot about 20 BB's and died. I've tried everything and the battery is a pain to take on and off. It's not like most guns... it has to have the battery mounted on top in a completely plastic container on top of your rail mount and you can see it when you aim down the sights.. Quite annoying if you ask me. I do not recommend this gun at all. It's supposed to be a "PRO" AEG.. I would take a walmart gun over this."

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