King Arms - M4 Striker Keymod CQB (Ultra Grade)

AEG Rifles - King Arms

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  • £134.99
  • Regular price £149.99
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This M4 airsoft gun replica by King Arms is truly an airsoft gun you want in your arsenal! With a shortened barrel and retractable stock it is perfect for CQB airsoft skirmishes.

The M4 striker is the ultra grade addition and is packed with features such as a keymod 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 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. 

Whether you are a beginner or veteran and looking for a shortened M4 airsoft gun forMSR Airsoft CQB skirmishes then this is the gun for you!


  • Full scale 1:1 replica
  • M-Lok and Keymod rail system
  • Removable tactical front grip (not shown in pictures)
  • Integrated 20 mm rails
  • Version 2 gearbox with 7mm bearings
  • MOSFET built in
  • Single shot and full-auto fire settings including safety
  • Flip-up adaptable front and rear sights
  • Functional charging handle
  • Adjustable hop-up
  • 6.05mm brass barrel
  • Quick change spring system
  • Adjustable 7-position stock
  • Mock forward assist
  • New integrated flash-hider


Included with the gun:

  • 1 x M4 140 round capacity magazine
  • 1 x Optional weapon system (TWS) front grip



King Arms

Model Name

M4 Striker CQB (KA-AG-218-DE)


6.0 mm

Weight and Scale

2.2 kg – 1:1

Magazine Capacity

140 Rounds

Powered By

Electric motor (AEG)

Recommended Energy Source

7.4V Li-Po Battery


Zinc-Alloy and Nylon Fibre

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)

~ 312fps ± 10%, using 0.20g BB

Rate of Fire (rounds per minute)

Approx. 1280