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CAA Licensed M4-S1 Carbine CQB Full Metal Airsoft AEG Rifle (Color: Black)

ID: 41900 (CAD-AG-02-BK)
King Arms / Eagle Force41900
3.6 stars, based on 13 reviews
CAA Licensed M4-S1 Carbine CQB Full Metal Airsoft AEG Rifle (Color: Black)
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$279.00 $230.00

CanadaExport Compliant
This gun has a muzzle velocity rating (FPS) between 366 and 500, and is compliant for export to Canada.

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This is the official CAA (Command Arms) Licensed M4-S1 CQB Airsoft Rifle. The receiver is made from high quality machined aluminum, each coming with an individualized serial number making this a legitimate collector's item as well as a formidable combat rifle. The polymer handguard features a triple rail setup with an interchangeable lower rail allowing the user to customize rail space to their preference.
All furniture is a high strength nylon fiber reinforced polymer. From the ergonomic pistol grip to the adjustable 6-position stock, this rifle combines the best in creature comfort and battle-ready utility. The stock also features an integrated CR123A battery compartment and QD Sling Swivel attachment points.
Internally the CAA M4 CQB uses a tried and true King Arms 7mm Bearing Ver 2 gearbox and a quality one-piece hopup. Hopup adjustment is also made easier with the integrated bolt catch function.

  • Fully Licensed CAA Trademarks
  • Full Metal Receiver and Barrel Assembly
  • High Strength Nylon Fiber Polymer RIS Handguard, Grip, and Stock
  • Adjustable Cheek Riser
  • Adjustable 6-position Stock with Rubber Buttpad
  • Integrated CR123A Storage Compartment in Stock (Batteries not included)
  • Ergonomic Pistol Grip
  • Flip-up Polymer Rear Sight
  • Railed Flat Top Receiver great for Optics
  • QD Sling Swivel Points on Stock and Handguard (Sling Swivel not included)
  • Full Metal, Fully Upgradeable 7mm Bearing Gearbox

  • Length: 705mm-790mm, Adjustable
    Weight: 3075g
    Inner Barrel: ~275mm
    Magazine Capacity: 360rd Hi-Capacity CAA Mag. Works with Matrix, G&G, Tokyo Marui and other compatible M4 / M16 Series Airsoft AEG Magazines
    Muzzle Velocity: 370~400 FPS (Measured with 0.20g BBs)
    Thread Direction: 14mm Negative
    Gearbox: Ver 2 Full Metal, Fully Upgradeable
    Motor: Long Type
    Fire Modes: Semi/Full-Auto, Safety
    Package Includes: Gun, Magazine, Manual
    Battery: 9.6v 2300mAh Small Type Nun-Chuck recommended (Battery not included)

    Hopup: Yes, Adjustable

    Manufacturer: CAA Airsoft (OEM: King Arms)

    Things you may need to get started:
      Battery and Charger – Required to power your AEG; use a high quality battery and charger for best results.

      Spare Magazines – Stay in the fight longer by bringing more ammo with you.

      BBs – High quality precision 6mm BBs recommended; Use 0.20g – 0.25g BBs for best results.

      Silicone Oil – Basic cleaning and lubrication maintenance help keep your Airsoft AEG in top working order.

    About CAA Airsoft
    As one of the most powerful companies, manufacturing leading products, in the weapon accessories and parts industry for real firearms, CAA is very pleased to announce their presence in the airsoft industry. CAA is here to provide you some of the best airsoft products on the market. is proud to be the CAA Airsoft Exclusive distributor in the USA!

    FPS Range: 370-400

    About King Arms / Eagle Force

    King Arms was founded in 2004 with the mission to ensure optimum customer satisfaction by providing precision products and outstanding service. In 2015, we moved our headquarters from Hong Kong to Taiwan where we've continued to provide excellent products with the highest quality. While working with leading firearms manufactures, we provide to our customers a level of innovation and authenticity that can't be found anywhere else in the Airsoft industry. This goal is what continuously drives us to improve and gives us purpose.

    About Command Arms (CAA)

    Founded in 2004, CAA is a long-established designer, developer and world class producer of high quality weapons, weapon modernization accessories, optics, tools and upgrades servicing Armed Forces, Law Enforcement and gun enthusiasts across the world.

    CAA is proud to have invented many weapon modernization accessories that have become the benchmark for our industry.

    CAA outfits firearms for maximum performance in any environment. We improve your weapon’s accuracy, grip, and aim with innovative add-ons to enhance balance and performance. Our upgrade kits assure the user with fluid and consistent operation when equipping with our range of tactical tools.

    California residents click here for Proposition 65 warning

    13 Customer Reviews

    (Write a review)

    by ian c. on 10/18/2017
    "I bought this gun a couple of months ago and I don't know why everyone gripes about it. I think it's fantastic! First thing I did was buy an angel custom Hive suppressor and a mad bull 6.03 tight bore barrel with mad bull ultimate hop up unit and ran the barrel through the whole length. Suppressor included Performed great at gamepod. Then I bought a matrix 110 spring (so I'd chrono just below 400 for indoor play) a Lonex titan A-2 motor and a Guarder cylinder enhancement kit and dropped those in. To be honest. I bought the gun for how it looks, knowing that I could pretty much replace everything inside as needed. M-4s are pretty modular and standard. Buy it for looks and just make sure it's fully upgradable and drop a little more cash into her and she'll sing like a bird. Stock chrono 340 .25g bbs after all upgrades 395 fps with .25 bbs. I think when I go to an outdoor game I'll swap the spring out for a 120. I can't imagine what I'll chrono then. But for now and what I've been playing the 110 is more than enough. First thing I did was tighten the stick because I read that that had been a grievance of some. My front mounted sight was a little crooked so I popped out the pins and rotated the outer barrel a bit and replaced them. Really the only complaint I have is that when you take it apart the batter wire that runs to the front is extremely snug and if you're not careful you can strip the shrink wrap around your wire. I blasted it with a little more heat to shrink it a little more and this hasn't been a problem since. Overall I really love this gun. But they are m-4s so I might just buy a new upper and lower and everything and make it entirely different. The possibilities are endless. Who says you need to have more than 1 gun?
    by Eric A. on 08/19/2015
    "I bought this Gun about 2 years ago, I have not have any internal problems. The only problems were really cosmetic. The Stock came off, I had to screw it in twice, There is no room what's so ever to fit a battery since it is in the Hand Guard. You Have to Buy Li-Po... Not included in the Box.

    Looks good
    FPS is balanced so you can Play Indoors and Outdoors
    It is Full Metal, At least most of the Gun
    Polymer feels great

    No Battery Room
    Stock fell off... Twice
    Gun becomes Front heavy if you use Flash Light, PEQ Box
    by Patrik L. on 11/04/2014
    "I got mine yesterday and i was very exited to test it out but when i was about to shoot, it didn't worked. it was something wrong whit the hop-up and more. Im sending it back and have to wait 2 weeks more to get it back again ;( I hope it works then.

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