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

ID: 28467 (AEG-KWA-M4A1)
4.9 stars, based on 81 reviews
KWA Full Metal KM4A1 Airsoft AEG Rifle (Package: Rifle)
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This item is currently Sold Out

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.
Canada Export CompliantCanadaExport Compliant
This gun has a muzzle velocity rating (FPS) between 366 and 500, and is compliant for export to Canada.
Free ShippingNo Coupon Required
Free shipping within lower 48 US states, no coupon code needed!
Package Options:


  • Full metal receiver
  • KWA 2GX gearbox
  • Optimized KWA 2G hopup and bucking
  • Flat top receiver is ideal for optics and other accessories
  • Adjustable 5 position crane style stock
  • Polymer furniture

FPS Range: 390-410

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.

About KWA

Established in 1988, KWA has been the leadingdesigner and manufacturer of airsoft replica weapons for law enforcement and military training. Its reputation for quality, performance, and reliability makes KWA a recognized leader in professional airsoft products.In a time when airsoft development is focused on external replications and logos, KWA has been advancing airsoft technologies with the introduction of the NS2 Gas Blowback System and the 2GX Mechbox. Both product advancements increase the overall performance and reliability beyond all conventional standards of the industry. These products represent KWAs commitment to excellence and passion for engineering products that simply outperform.KWAs state-of-the-art manufacturing facility is located in Taiwan with an independent sales and distribution operation in the United States that services the Americas and all European Regions.

81 Customer Reviews

(Write a review)

by Jerry S. on 07/29/2021
"Best buy at the price range. Our team bought this and a g&g raider for back ups. For 10 bucks more this out classes the raider. Solid metal construction. Reliable and accurate. Proprietary parts so for a back up gun it makes drop in replacements easy. Hop up bucking might be weird but g&p green and prommies fit i believe so easy fix when it wears out. The g&g might be more upgradable but its still polymer and the kwa if something breaks you just buy the part and put it in. Perfect for a backup gun. Its like a tier under krytac. Only kwa i own but at this price pouit id buy it again and again. Mags can be picky. Just buy kwa mid or hicaps when you order this.
by Devan T. on 05/11/2020
"At this point, I have several years on my KWA M4 and it is without a doubt the most durable gun I have ever owned. It is a dependable workhorse that I am extremely proud to have in my kit. I'll break it down.

Externals - I'll be honest, they are unspectacular and they haven't held up like the rest of the gun. The body is showing some scratches, a few pieces have come loose, the levers, buttons, and handles aren't in great shape, and there are lots of guns in the world with better furniture. They just cost twice as much. One note, KWA M4's don't play well with most magazines. Thankfully, KWA magazines are pretty good and fit perfectly as they should.

Internals - They are rock solid and have held up to abuse well beyond my expectation. I have never gotten this much time out of a rifle with only what I would consider basic maintenance. KWA is generally considered to be best treated as a gun that you take out of the box and leave it as-is and that's more or less what I have done, so I can't speak about upgrading difficulties. It has stayed OEM.

The shooting Experience - I'm going to give this a generic 'good'. At this price point, its excellent. It's responsive enough, its rof and velocity saw through popcans and foes easily, and its accuracy will get you though normal engagement ranges. It's not a sniper, but I don't struggle to hit my target with it.

Overall, I can't recommend this gun enough as either a first rifle or a trusted backup. Even though it has been phased away from being my primary in favor of more modern designs, this is far from obsolete and it still gets used regularly. I tend not to run more than a season or two out of my rifles and I don't get too attached to them. This is the exception. I'd never consider selling it.
by Daniel D. on 05/03/2018
"Surprised I'm the first review on this gun. This was my first airsoft purchase in a while and I must say I'm impressed. The build quality is exceptional for a $200 price point. The revised gear box and ~400 fps out of the box is a nice touch. I rarely play games and just wanted a fun backyard shooter so this was perfect for me. Fully stock, the accuracy was pretty decent but I wound up changing the original KWA fin bucking with a G&P one. I also added a 407mm madbull 6.03 tightbore barrel, front rail, red dot, and foregrip, and now this thing is insanely accurate up to 150ft. I'm hitting mailbox sized targets with ease and the ROF is great, even on a 9.6 nimh battery. I would suggest using at least a 9.6v nimh or lipo.


-Great build quality, sturdy feel, plenty of metal pieces.
-Easily upgraded, except the hop-up really. But stock hop up was fine for me.
-Nice mag, no feeding issues.
-Strong stock FPS / RoF. Using .28 bbs with my upgrades and it's launching them 200+ ft no problem.


-The KWA fin bucking may be weird for you. I had to adjust mine to improve the accuracy. If it's slightly twisted it will effect it.
-The stock hop-up hole is thin (where you input the barrel). I went through MANY buckings after getting two different barrels (prometheus and madbull) and only a few would fit w the new barrel into the stock hop up. Forget lonex, it will be too wide. The only that worked for me with an aftermarket barrel were KWA and G&P.

Overall after the mods this thing is sick. I can spray off 20+ shots at a 120 ft mailbox sized target and see / hear each bb hit it with ease. The gun is also great stock, but has a lot more potential!

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