KM4 CQB AEG Rifle
$295.95
Automatic Electric Gun|AEG 2|6mm
- Classic AR15 style with clamshell handguard and detachable carry handle
- Comes with one K120 magazine
- KWA Rewards: earn 295 points ($5.90 store credit). How it works
- Pay over time: 4 interest-free payments of $73.99 with Klarna, or Affirm. Details
- Free shipping on orders over $200 (contiguous US).
Klarna and Affirm are subject to approval. See payment terms. A higher initial payment may be required for some consumers. CA resident loans made or arranged pursuant to a California Financing Law license.
Battery and charger are not included.
*This product comes with an orange muzzle brake out of the box – black muzzle brake in the image sold separately.
We don't give restock dates. Leave your email and you'll get one email if it's back in stock.
KWA KM4 CQB AEG
Clamshell handguard, carry handle, classic AR15 style
The KWA KM4 CQB is a compact 6mm AEG airsoft carbine in the classic AR15 style, with a clamshell handguard and a detachable carry handle. It shoots 340–360 FPS in semi and full auto on KWA’s proven AEG 2 gearbox, and comes with one K120 120-round magazine and an orange muzzle brake.
Looking for one today?
The KM4 CQB is out of stock right now. These KWA models are the closest match today.
KWA Rewards
Earn 295 points on this item, worth $5.90 in store credit. New members get 100 points for signing up and 500 bonus points on their first order.
How KWA Rewards worksPay over time
Split it into 4 interest-free payments of $73.99 with Klarna, or pay over time with Affirm. Choose either at checkout.
See payment optionsFree shipping
This item ships free, since orders over $200 ship free in the contiguous US.
Shipping detailsKlarna and Affirm are subject to approval. See payment terms. A higher initial payment may be required for some consumers. CA resident loans made or arranged pursuant to a California Financing Law license.
What is the KM4 CQB?
The KM4 CQB brings back the classic AR15 look: a clamshell handguard and a detachable carry handle. Take the carry handle off and the flat-top railed receiver is ready for optics.
It has a full metal alloy lower receiver, the proven KWA AEG 2 gearbox and an enhanced hop-up bucking, so it keeps running game after game.
- AEG 2 gearbox, electronic trigger ready
- Enhanced hop-up bucking, adjustable hop-up
- Detachable carry handle
- Flat-top railed receiver for optics
- Two-piece clamshell handguard
- Full metal alloy lower receiver
- KWA Crane stock
- Takes K120 and MS120 magazines
KM4 CQB Features
Carry Handle
Detachable, for the classic look or a clean optics rail.
Flat-Top Receiver
Mount a red dot or scope once the handle is off.
Compact
10.5-inch outer barrel, 27.75 inches retracted.
KM4 CQB Specifications
| Performance | |
|---|---|
| Power system | AEG 2 gearbox |
| Velocity | 340–360 FPS |
| Rate of fire | 13.9+ rounds per second |
| Firing modes | Safe, semi-auto, full auto |
| Magazine | K120 included, 120 rounds. MS120 compatible |
| Hop-up | Adjustable |
| Motor | KWA high torque motor |
| Electronic trigger | Ready |
| Battery | NiMH or Li-Po/Li-Fe, Deans (T-plug) connector (2022 version) (not included) |
| Dimensions | |
| Length | 27.75 in retracted, 31 in extended |
| Outer barrel | 10.5 in |
| Inner barrel | 10.75 in |
| Weight | 6.70 lb |
| Build | |
| Platform | Carbine |
| Rail | Two-piece clamshell handguard |
| Stock | KWA Crane stock |
| Muzzle | A2 birdcage |
| Body | Full metal alloy |
What comes with the KM4 CQB
How the KM4 CQB works
Which magazines to use
The KM4 CQB comes with one KWA K120 120-round mid-cap. Spare K120s come in 6-packs, and KWA also lists the MS120 as compatible. For a bigger load, the K400 holds 400 rounds.
Ready for an electronic trigger
KWA lists the AEG 2 gearbox in this rifle as electronic trigger ready, so it can take an electronic trigger unit as an upgrade.
If you would rather start with an ETU already installed, the Ronin T6 and Ronin T10 ship with the KWA ETU.
Choosing a battery
The battery and charger are not included. This rifle takes NiMH or Li-Po/Li-Fe batteries with a Deans (T-plug) connector (2022 version).
Match the connector, check that the battery fits the stock or battery space, and charge it only with a charger made for that battery type. Ask KWA if you are not sure which size fits.
Hop-up, explained
Hop-up puts backspin on the BB so it lifts and flies flatter and farther. Too little and BBs drop early. Too much and they climb.
- Start with the hop-up at its lowest setting.
- Fire a few shots at a target at your usual distance.
- Add a little hop at a time until BBs fly flat before they drop.
- Back it off if BBs start to rise. Re-check whenever you change BB weight.
KM4 SR7 vs KM4 CQB vs KM4A1
All three are full metal AEG 2 rifles with a KWA Crane stock, an A2 birdcage, adjustable hop-up and an electronic-trigger-ready gearbox.
| KM4 SR7 | KM4 CQB | KM4A1 | |
|---|---|---|---|
| Velocity | 340–360 FPS | 340–360 FPS | 385–410 FPS |
| Rate of fire | 14+ rounds per second | 13.9+ rounds per second | 13.1+ rounds per second |
| Outer barrel | 10.75 in | 10.5 in | 14.5 in |
| Inner barrel | 10.75 in | 10.75 in | 15.55 in |
| Length | 28–31.25 in | 27.75–31 in | 31.75–35 in |
| Weight | 6.79 lb | 6.70 lb | 7.21 lb |
| Handguard | 6.13-inch Picatinny rail | Two-piece clamshell handguard | Two-piece clamshell handguard |
| Battery connector | Tamiya (2020 version) | Deans / T-plug (2022 version) | Tamiya (2020 version) |
| Platform | SBR | Carbine | Carbine |
KM4 CQB care and parts
- Disconnect the battery whenever you are not using the rifle.
- Charge with a charger made for your battery type (NiMH or Li-Po/Li-Fe).
- Keep the inner barrel and hop-up bucking clean if accuracy drops.
- Wipe the rifle down after each game and check screws and the rail before you play.
Find manuals and exploded diagrams in the KWA Resources tab on this page, or in the Manuals & Diagrams library.
KM4 CQB FAQ
What is the KWA KM4 CQB?
A compact 6mm AEG airsoft carbine from KWA in the classic AR15 style, with a clamshell handguard, a detachable carry handle and the AEG 2 gearbox.
Is the KM4 CQB in stock?
Not right now. The block near the top of this page shows current KWA alternatives.
How many FPS does the KM4 CQB shoot?
KWA lists it at 340–360 FPS.
Can I mount an optic?
Yes. Remove the carry handle and the flat-top railed receiver takes optics.
Which magazines fit the KM4 CQB?
It comes with one KWA K120 120-round magazine, and KWA lists the MS120 as compatible.
Is a battery included?
No. It takes NiMH or Li-Po/Li-Fe batteries with a Deans (T-plug) connector (2022 version).
Does it come with an orange tip?
Yes. It ships with an orange muzzle brake. The black muzzle brake shown in the photos is sold separately.
Can I pay for the KM4 CQB over time?
Yes. Choose Klarna at checkout to split it into 4 interest-free payments, or Affirm to pay over time. Both are subject to approval. See Payment Options.
Do I earn KWA Rewards points on the KM4 CQB?
Yes. KWA Rewards members earn 1 point for every $1 on orders of $50 or more, so the KM4 CQB earns about 295 points, worth $5.90 in store credit (50 points = $1). See KWA Rewards.
Is the KM4 CQB covered by a warranty?
Every KWA gun is backed by KWA, with warranty support and in-house service in California. Protection Plus adds extended warranty coverage and a repair plan with no repair fee, discounted parts and free return shipping. See the Protection Plus page for plan details.
Built to Run, Backed by KWA
| Weight | 8.1 lbs |
|---|---|
| Dimensions | 32.5 × 12.5 × 4 in |
Specifications
- Length (Retracted): 27.75“
- Length (Extended): 31.00“
- Height: NA“
- Outer Barrel Length: 10.50“
- Inner Barrel Length: 10.75“
- Magazine Capacity: 120
- Weight: 6.70
- Gearbox: AEG 2
- Electronic Trigger Ready: yes
- Rate of Fire: 13.9+
- Velocity: 340-360 FPS
- Power Source: NiMh or Li-Fe/Li-Po (2022 VER. Deans/T-plug)
- Operation: LITHIUM POLYMER
- Adjustable Hop Up: YES
- FPS Range: 340-360 FPS
- Firing Modes: SAFE, SEMI AUTO, FULL AUTO
- Motor Type: KWA HIGH TORQUE
- Stock: KWA CRANE STOCK
- Rail Type: CLAM SHELL, 2 PIECE HANDGUARD
- Muzzle Device: A2 BIRDCAGE
- Compatible Magazines & Additional Features: MS120
KWA Resources
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