King Arms M4 CQB (Advance Version)

AEG Rifles - King Arms

  • Sale
  • Regular price £239.99
Tax included. Shipping calculated at checkout.

This M4 airsoft gun replica by King Arms is truly an airsoft gun you want to get your hands on and take out to a game! This full metal airsoft replica gun with shortened barrel feels like the real deal and adds another whole level of realism to your airsoft load-out.

The M4 CQB is the advanced grade addition and is packed with features such as a long picatinny rail system for your attachments, in-built MOSFET and an optional tactical front grip. This airsoft gun offers a huge amount of rail space for attaching scopes, PEQs, torches and more! The large stock tube accommodates a large variety of different sized batteries meaning you can use higher capacity batteries in your gun which will keep you in the game for longer. This gun works great straight out of the box, meaning you don't have to waste any time modifying the gun and can take it straight out on the airsoft field.

The gun also has popular features that are present in other models of the King Arms range such as a quick change spring system, flip-up rear iron sights, 6.05mm brass barrel and underneath the flash hider a 14mm CCW thread for attaching tracer units or other suppressors to the gun. 

Made from full metal this gun has the reliability you expect from an advanced grade airsoft gun. Whilst a shortened barrel, adjustable hop-up and adaptable stock makes this gun perfect for CQB and longer range outdoor skirmishes.

Whether you are a beginner or veteran and looking for a full metal M4 airsoft gun for CQB and outdoor skirmishes then this is the gun for you!



  • Full scale 1:1 replica
  • Full metal design (pistol grip & stock are polymer)
  • Removable tactical front grip
  • 20mm RIS handguard
  • Version 2 gearbox with 8mm bearings
  • MOSFET built in
  • Single shot and full-auto fire settings including safety
  • Adjustable flip-up rear sight
  • Functional charging handle
  • Adjustable hop-up
  • Battery storage in buttstock with mini Tamiya connector
  • Unique laser engraved serial number
  • Adjustable stock


Included with the gun:

  • 1 x M4 300 round capacity magazine
  • 1 x Optional front grip
  • 2 x Rail cover



King Arms

Model Name

M4 CQB (KA-AG-215)


6.0 mm

Weight and Scale

1.8 kg – 1:1

Magazine Capacity

300 Rounds

Powered By

Electric motor (AEG)

Recommended Energy Source

7.4V Li-Po Battery


Metal and Polymer

Safety and Fire Modes

Safe, Semi-automatic and fully automatic

Adjustable Hop-Up


Hop-Up Adjustment Location

Pull back charging handle - behind mock bolt 

Velocity (feet per second/FPS)

~ 328fps ± 10%, using 0.20g BB

Rate of Fire (rounds per minute)

Approx. 1200