Click to view our Mega Sale items

KWA Full Metal KM4 CQB AEG M4 Airsoft Rifle w/ 2GX Gearbox

WAS : $279.95
YOU SAVE $28.00 !
Muzzle Velocity: 340 FPS
Build Material: Metal Receiver, Outer Barrel
Weight: 6.5 lbs
Overall Length: 26" in. / 29.25" in.
Inner Barrel: 273 mm
Battery Type: 8.4V Mini
Gearbox: Version 2 (Metal)
Magazine Capacity: 350 rounds
Color: Black
Product Code:

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 & LasersScopes and OpticsTactical Foregrips
Customers Who Bought This Item Also Bought

    Our Promise:  KWA AEGs are renowned for their world-class performance and exceptional build quality.  With an exceptional 45-day factory warranty and LIFETIME tech support offered directly through KWA, we feel most qualified to be YOUR premier KWA dealer.  In addition, you are guaranteed to pay the absolute LOWEST price on the market for your new KWA AEG rifle, backed in writing by our industry-leading 125% Lowest Price Guarantee.

    Our take:  KWA is engaged in manufacturing the industry’s most prevalent "LiPO-ready" AEGs that are engineered to function smoothly with Lithium Polymer batteries right out of the box.  With rugged full metal construction (full metal receiver, barrel, internals) and a solid enhanced 2nd generation gearbox, the KWA KM4 CQB is a top of the line CQB weapon designed to dominate any CQB game it’s thrown into.

    The KM4 CQB is equipped with 9mm steel ball bearing bushings and a removable carry handle.  The front barrel is shortened, hence the "CQB" designation, for ultra-quick maneuverability.  KWA’s line of AEGs is priced at a premium for a reason:  they offer the hottest rate of fire "out-of-the-box" performance on the market and have internals that will last considerably longer than any of the competition.

    KWA USA stands behind their product and offers a 45-day warranty and lifetime tech support on all KM4-series AEGs.

    Battery and charger are NOT included.  Airsoft Megastore recommends the Tenergy 11.1v mini-type LiPO battery and Tenergy LiPO Smart Charger (required for charging LiPO batteries).  9.6v NiMH mini-type batteries with standard NiMH Smart Chargers will also work with this rifle.

    - KWA 2GX Gearbox
    - KWA 2G High Performance Gearbox
    - Fiber reinforced handguard with battery compartment
    - Shoots 900+ rounds per minute; 1200+ rounds per minute w/ 11.1v LiPO battery
    - Removable carry handle
    - Flat top receiver
    - Full metal alloy receivers
    - Adjustable front and rear sights
    - 6 position collapsible stock
    - Semi and Full Auto selective fire
    - Adjustable Hop-Up
    - 45 Days Product Warranty [US only]
    - Lifetime Tech Support

    Operation:  Electric Automatic
    Build:  Full Metal Receiver, Full Metal Barrel
    Firing Modes:  Semi-automatic and Full-automatic
    Muzzle Velocity:  340+ fps** with .20 gram BB’s
    Rate of Fire:  20+ rps***
    Magazine:  350-round high capacity (gear wind-up)
    Gearbox:  Full metal
    Battery Type:  8.4V, 9.6V NiMh Battery, or 7.4V, 11.1V Lithium Polymer or Lithium Manganese Battery [Maximum 11.1V, 20A continuous]
    Hop-up:  Adjustable
    Outer Barrel Length:  9.375" (238mm)
    Barrel thread:  14mm* (Counter clock wise)
    Inner Barrel Length:  10.75" ( 273mm)
    Inner Barrel Diameter:  6.05mm
    Hop-Up:  Adjustable
    Weight:  6 lbs / 6.5 lbs ( with magazine)
    Overall Length:  26" in. / 29.25" in. (Retracted / Extended)

    * Orange tip flash hiders are required for all US sales or where applicable by law.
    ** Individual test results may vary depending on brand of BBs, and chronograph used.
    *** Results are based on tests conducted with 11.1v 1500mAh 15A LiPo batteries.

    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.

    KWA Full Metal KM4 CQB AEG M4 Airsoft Rifle w/ 2GX Gearbox Categories:

    Write A Review

    • Please do not use the review feature to ask questions. Any reviews containing questions will not be answered, and will be deleted
    • Please keep your review clean of obscenities and other distasteful content
    • Please be detailed in your review, and talk about what you like/dislike about this product
    • Click here to review submission guidelines.


    ***** 4 / 5
    Based on 5 Review(s)
    • (4)
    • (1)
    • (0)
    • (0)
    • (0)
    Write Your Own Review

    Product Reviews

    Great Gun
    By: Mike

    "Pros- Amazing quality, solid internals and externals. Charging handle pulls smooth, crane stock locks solidly in place, no feeding issues whatsoever with the kwa midcaps. Lightweight at 6.5lbs and close to the weight of the real thing. Short barrel makes it very maneuverable. Cons- limited range(it's a cqb gun) so not the best for woodsplay. Wired to the front and I don't think there's a battery out there that will fit in the foregrip. I tape mine to the top of the foregrip with electrical tape. Overall very happy with this gun. Fit and finish is high quality, they make these in taiwan so the qc is much better than china. Built to handle an 11.1v lipo and I use and 8.4v nimh so it should last an awful long time. KWA has made a customer for life with this gun."

    Was this review helpful to you?
    KM4 CQB
    By: RickDoggs

    "Great gun right out of the box, upgraded spring and its pushing a .25 bb at a consistent 430 fps with a great rate of fire on a 9.6 2000 mah battery. With a stock barrel and bucking you should have no problem hitting a person sized target well in access of 100 feet. Superior build and quality.....get one. "

    Was this review helpful to you?
    By: Aaron

    "Is the Flash Hider glued on?"

    Was this review helpful to you?
    By: Joel Ray

    "sick sick sick sick still havent found a batery that will fit but when i do i will update"

    Was this review helpful to you?
    the gun
    By: Corwin Corpuz

    "the lipo they recommend (tenergy 11.1 mini) doesnt fit in the gun but other wise amazing"

    Was this review helpful to you?

    Get exclusive deals & insider tips:


    Call Our Support Team:

    (818) 495-6502