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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
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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
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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!

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370 FPS King Arms Full Metal COLT M4A1 Airsoft Carbine AEG Rifle

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$209.95Guaranteed Lowest
  • Model: M4
  • Muzzle Velocity: 370 FPS
  • Build Material: Metal Receiver, Outer Barrel
  • Weight: 7 lbs
  • Inner Barrel: 363 mm
  • Battery Type: 8.4V Mini
  • Gearbox: Version 2 (Metal)
  • Magazine Capacity: 300 rounds
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Free ShippingThis item qualifies for Free Shipping

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Our take:  This M4A1 Carbine features fully licensed Colt trademarks and is manufactured by King Arms, making it one of the most solidly built M4A1s available at an unbeatable price.  Designed with reliability and performance in mind, this King Arms Colt M4A1 packs a serious punch and weighs in at over 7 pounds thanks to its solid metal construction.

Carrying full Colt trademarks, this AEG features a full metal body — full metal receiver, barrel, and internals — a re-designed high performance full metal gearbox with 7-millimeter bearings, high performance gears/bushings/piston, and a high-torque motor to drive the gearbox with authority.  It is one of the best choices for an AEG because its lack of compromise between realism and power.  Previously only available in Europe, this model is now available in the United States for the lowest price on the market.

The rifle features a retractable rear stock for versatility and a 14.5-inch one-piece outer barrel to make a solid and durable AEG.  The metal receiver disassembles with ease (pop out locking body pins and you’re ready to access internals, install upgrades, perform maintenance on the rifle).  However, one of the coolest features is the functional locking bolt catch that drives the mock bolt back into position after racking back the charging handle.  Pick up this solid full metal AEG, which easily shoots up to 370 FPS (w/ 0.20g BBs), and take out your targets with this carbine full licensed by Colt.

Operation:  Electric Automatic
Build:  Full Metal Receiver, Barrel, Gearbox / Polymer Stock, Grip
Firing Modes:  Semi-automatic and Full-automatic, w/ functional safety
Muzzle Velocity:  330-370 FPS (w/ 0.20g BBs)
Magazine:  300rd High Capacity (gear wind-up)
Inner Barrel Length:  363mm
Gearbox:  Full Metal Version 2
Battery Type: 8.4V Mini Brick (Not Included)
Hop-up:  Adjustable
Weight:  7 pounds

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

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.

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Product Reviews

5 370 FPS King Arms Full Metal COLT M4A1 Airsoft Carbine AEG Rifle *****
Perfect COLT Replica

"Just recieved mine today and first looks and feel...a very well produced replica of the real steel COLT. Trademarks, weight and feel are on par as the 5.56. This King Arms COLT is a must for Milsim players. pros... a perfect replica full metal COLT/GOVT trademarks NATO trademark on barrel bolt lock function excellent performance cons... stock and mag slightly wobble (common on most airsoft) well worth the price!"

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5 370 FPS King Arms Full Metal COLT M4A1 Airsoft Carbine AEG Rifle *****

"This gun is pretty good overall. pros: full metal!!!! light great RPM about 900-950 with my 9.6 volt shoots great cons: my selector switch screwed up but they repaired it. i would reccomend this gun to anyone for cqb or field. the only things that would complete this gun would be a 6.01 tightbore barrel and an eotech 552 holographic sight."

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5 370 FPS King Arms Full Metal COLT M4A1 Airsoft Carbine AEG Rifle *****
awesome gun

"just got this gun and its great. full metal, shoots amazing, durable build, looks awesome, full colt trademarks are really cool(laser etched in reciever), working bolt catch makes the gun seem really realistic. overall, this is a great gun to buy for its price."

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5 370 FPS King Arms Full Metal COLT M4A1 Airsoft Carbine AEG Rifle *****
Just got this gun and its AMAZING!

"This is my first airsoft AEG gun and all i can say is this gun is AMAZING! almost no wobble other then the stock but it can be tightened easily. This gun shoots very hard, let my friend shoot me from about 20ft and it left bloody welts everywhere it hit. Idk how to use the hop up yet so i havent messed with it much. For a first time buyer i would deffinantly reccomend this gun, its very up gradable and just feels good. I will definantly buy from KA again!"

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4 370 FPS King Arms Full Metal COLT M4A1 Airsoft Carbine AEG Rifle *****
Great gun

"This is my first gun and it is great. all M4 Mags work on this gun. great FPS, can destroy a soda can from about 75 feet. its your average M-4 AEG. my only compaints are the delta ring (extremely stiff, which doesnt compliment my already weak self) and the stock (randomly came off, but easily fixed. must put in the screw that holds the stock in place loosely)"

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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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