King Arms M4 Striker

King Arms
From £159.99
  • Threaded Barrel
  • Quick Change Spring
  • M-LOK/RIS Handguard

This Airsoft Electric Gun is based on the M4/AR Platform and features King Arms trademarks that make the Receiver look extremely realistic. With a largely Nylon Fiber external build, this Airsoft Gun is surprisingly heavy at over 1.6kg, making it a comfortable weight to use all day without worry. With a Quick Change Spring, M-LOK Handguard and an Adjustable HOP Unit, this is a sure choice for beginners looking to get a reliable workhorse for their first AEG.

Full description


The King Arms M4 Striker series are largely constructed from high quality Nylon Fiber that makes the Rifle lightweight and easy to use, but is still surprisingly heavy, weighing in at a 1.6kg for the shortest variant. The replica is based on the M4/AR Platform, with the addition of an M-LOK Railed Handguard which is ready to accept accessories, such as Grips, Lasers, Lights and more. The Handguard comes supplied with 20mm Rail Sections so that you can still use typical 20mm/RIS accessories. The Handguard has a 20mm Rail that runs the full length to the back of the Receiver, and is ready to accept Sights/Scopes to help you aim better. The Gun comes included with a set of Flip Up Ironsights, which can be used in place of a sight, or used as a backup to your Sight, should the batteries give up during a game day. A 14mm CCW Threaded Barrel can be found underneath the Flash Hider, accessed by simply unscrewing the Flash Hider. A Sliding Stock at the rear of the Gun allows you to change the overall length of the Rifle to suit each user, and is also where your Battery should be installed. Just pull down on the Stock Lever and pull the Stock off the back of the Buffer Tube to access the Mini Tamiya Connector inside. A 7.4v Stick LiPo is ideal for the space inside. The Stock also features QD Sling Sockets, which can be used to install a Quick Release Sling Loop. The Receiver and Magazine are adorned with various trademarks and markings, which makes the Rifle look far more realistic than most full-polymer builds.

Internally, the Gun is powered by a Version 2 Gearbox with a Quick Change Spring, allowing you to quickly change the Main Spring of the Gun to affect the output power, without disassembling the Gearbox. This saves you a lot of time and stress should you need to increase/decrease muzzle velocity to suit various Airsoft Sites. The Gearbox features 7mm Bearings with a metal Spring Guide. An Adjustable HOP Unit allows you to control the amount of backspin applied to your BBs, keeping them in the air for longer and theoretically improving consistency and range when the right settings and BB weights are used. Simply pull back on the Charging Handle to access the Gear-Wheel behind the Dust Cover to make adjustments.

Included in the box is a 140rnd Mid Cap Magazine that is loaded by using a Speedloader to force BBs in through the top, and will feed until empty with no winding required. If you're looking for a cost effective 'First Airsoft Gun' that is built to a reliable standard by a well-known brand, and has all the looks of a Full Metal Airsoft Gun without actually being one, then the King Arms M4 Striker series are perfect for you.


  • Electric Powered Airsoft Gun
  • M4/AR Platform Replica
  • Nylon Fiber Externals
  • Alloy Fire Controls & Trim
  • King Arms Trademarks
  • Quick Change Spring
  • Adjustable HOP Unit
  • 14mm CCW Thread
  • Accepts Airsoft Suppressors
  • M-LOK Railed Handguard
  • 20mm Rail Adapters Included
  • Full Length Top 20mm Rail
  • Ready for Sights and Scopes
  • Unique Serial Number
  • Sliding Multi-Position Stock
  • Version 2 / Rear Wired Gearbox
  • Flip Up Ironsights Included
  • 140rnd Mid Cap Magazine
  • Rubber Butt Pad for Grip
  • Accepts Crane Stock Batteries
  • Metal Spring Guide
  • 7mm Bearings
  • Ergonomic Pistol Grip
  • Markings:
    • King Arms Logo
    • CAL. 6mm BB
    • Unique Serial Number
    • P4TR01B4S3
    • Airsoft Electric Rifle

Package Includes

  • King Arms M4 Striker
  • 140rnd Magazine



Weapon Construction External
Weapon Type
Assault Rifle
Over 18 Only Icon
Over 18
Icon UKARA - United Kingdom Airsoft Retailer Association
Defence / UKARA Required
Yes, No,
FPS Icon
FPS (Feet Per Second), using 0.20g BB
Approx. 290fps ± 10%, using 0.20g BB
Site Legal Icon
Site Legal, using 0.20g BB
Included Items
Skill Level Icon
User Skill Level

Weight and Dimension

Weight KG Icon
Weight (KG)
Approx. 1.8kg, Approx. 1.675kg,
Weapon Length Collapsed
Length (Collapsed)
81cm, 70.5cm,
Weapon Length Extended
Length (Extended)
89cm, 78.5cm,


Construction Icon
Nylon Fiber externals, w/ Alloy Fire Selector & Trim.
Weapon Construction External
External Construction
Gearbox Icon
Internal Construction

Weapon Specific

Power Source Icon
Powered By
Blowback Icon
Weapon Platform
AR Platform, M4 / AR15 / M16,
Magazine Style Icon
Magazine Style
STANAG, M4 / AR Platform,
Fire Select Icon
Fire Selector
PatrolBase | Fire Select Safe
Patrol Base | Fire Select - Semi Automatic
Semi Automatic
Patrol Base | Full Automatic
Full Automatic
Weapon Safety Features Icon
Safety Features
Trigger Lock
Shooter Configuration Icon
Shooter Configuration
Right Handed
Weapon Configuration Icon
Weapon Configuration
Weapon Scale Icon
Weapon Scale
Suggested BB Weight


Hop-Up Unit Icon
Hop-Up Unit
Hop-Up Unit Adjuster Icon
Hop-Up Adjuster
Hop-Up Unit Location Icon
Hop-Up Location
Behind mock bolt when charging handle is pulled to the rear


Weapon Furniture Icon
  • Railed Handguard
  • Flip-Up Ironsights
  • Railed Receiver
  • Sliding Stock
  • Threaded Outer Barrel
  • QD Sling Point
Rail System Icon
Rail System
20mm RIS / RAS , MLOK Rail System,
Icon Stock Positions
Stock Setting
Weapon Length Extended
Stock Positions
6 Position
Sight Type Icon
Sight Type
Iron Sights
Sling Plate Icon
Sling Options


Icon Thread Type
Outer Barrel Thread Type
Icon Thread Direction
Outer Barrel Thread Direction
CCW (Counter Clockwise)
Outer Barrel Thread Size
Inner Barrel Diameter
Inner Barrel Length
380mm, 270mm,

Magazine Specific

Magazine Type
Medium Capacity , AEG,
Magazine BB Capacity
Approx. 140 Rounds
Magazine BB Fill Method
Speed Loader
Magazine BB Fill Location

Electric Gun Specific Information

Gearbox Icon
Gearbox Version
V2 Gearbox
Wiring Icon
Gearbox Wiring
Rear Wired
Spring Change Icon
Gearbox Quick Change Spring
Battery Specific
Battery Connector
Patrol Base | Icon | Mini Tamiya
Mini Tamiya
Suggested Battery
Suggested Battery Type
Suggested Battery Configuration
Suggested Battery Voltage

Product Testing Data

Notepad Icon
Test Description
Notepad Icon
Tested Using
ASG Blaster 0.2g BBs
Notepad Icon
Test Date

Detailed Power Tests

FPS, using 0.20g BB
Approx. 290fps, using 0.20g BB

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