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KWA Full Metal KM4A1 Airsoft AEG Rifle - (Package: Rifle)

ID: 28467 (AEG-KWA-M4A1)
4.8 stars, based on 87 reviews
z KWA Full Metal KM4A1 Airsoft AEG Rifle - (Package: Rifle)
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Sorry, this item is Discontinued

MAP ProtectedExempt From Coupons
The manufacturer of this product enforces a strict minimum advertised price (MAP) policy which excludes this product from any additional discount coupon codes. This item, however, may qualify for free shipping.
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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KWA Full Metal KM4A1 Airsoft AEG Rifle - (Rifle)

The second-generation KWA airsoft rifles feature over 30 structural improvements and performance upgrades, making them the top choice for professionals and serious enthusiasts.

The KWA KM4A1 Carbine is the first production AEG engineered specifically for the unparalleled performance of todays advanced battery technology: Lithium Polymer (LiPo). LiPo batteries provide higher capacity and superior performance surpassing the more common Nickel Metal Hydride (NiMh) batteries. However, this powerful battery requires the highest quality of internal components.

To handle the extra power of LiPo batteries, the KM4A1 is equipped with a reinforced metal gearbox utilizing KWA's exclusive 8 and 9 mm ball bearing bushing combination and case hardened, precision metal gear sets. Heavy duty springs and high-torque motors are matched for optimum results. High-grade metal alloy are used for the production of the upper and lower receivers.

The KWA KM4A1 Carbine was engineered to outperform the competition, offering ultra high performance and dependability straight out of the box!


  • Full metal receiver
  • KWA 2GX Gearbox
  • KWA 2G High Performance Bucking
  • Removable carry handle
  • Flat top railed receiver, perfect for Optics
  • Adjustable front and rear sights
  • Adjustable Hop-up
  • 6 position collapsible stock
  • Nylon Fiber Stock, Handguard, and Motor Grip
Length: 775mm - 860mm (Adjustable)
Muzzle Velocity: 390~410 FPS (Measured w/ 0.20g BBs)
Inner Barrel Length: 395mm
Inner Barrel Diameter: 6.05mm
Weight: 3030g
Thread:14 mm Negative
Magazine Capacity: 120rd Mid -apacity. Compatible with KWA, G&P, MAG, Dboy and other similar M4 Series Magazines (Due to design KWA M4 AEGs may not be compatible with some magazine manufacturers)
Battery 9.6v Small Butterfly Type recommended (Battery not included)
Gearbox: Ver 2 Full Metal, 2GX design. Compatible with Tokyo Marui Style parts
Motor: Long Type
Hopup: Yes, Adjustable

Manufacturer: KWA

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.

FPS Range: 390-410

87 Customer Reviews

(Write a review)

by Tyler S. on 08/08/2016
"Best Gun For Any Conditions or Ranges It is A Sniper With The Right Battery And Right BB's
by Thomas M. on 05/25/2016
"I've had this gun for about 7 years now, and it has definitely proven itself a beast. Out of the box, this gun is very sturdy, has a great ROF, and just looks cool. Right now, I use a 7.4v li-po which gives a nice ROF. Internally, there is really nothing to do in my opinion, except for maybe the inner barrel, which is actually very high quality for a stock barrel. About a year ago, I had to replace the gearbox because it was starting to crack (Mine had the old generation gearbox, which was new at the time). So then I got the new 2GX gearbox which has strengthening ribs where Version 2 gearboxes usually crack, making this nearly indestructible.
-Sturdy (Mine is almost 8 years old)
-Basically already upgraded
-Good Rate of Fire
-Accurate (The 2GX bucking is great)
-Mags are picky----Solution: buy KWA mags!
Overall, very good gun, absolutely love it. Probably the best AEG I've tried. KWA's slogan sure does fit- "Engineered to Outperform"
5/5 all day, every day!
by Pauline C. on 01/08/2014
"I have this gun for about a year and man does it run like a champ!

I put a 9.6v battery on it and it shoots really fast! All metal body, great gearbox, fuse, sturdy stock and buffer tube, easy to upgrade.
I recommend this gun to all airsofters.

Full Metal
Long Outer Barrel


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This item is Discontinued.