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King Arms Skull Frog Lipo Ready Limited Edition M4A1 Airsoft AEG with 8mm Gearbox

ID: 54085 (AEG-KA-SF-M4)
King Arms / Eagle Force54085
4.3 stars, based on 8 reviews
z King Arms Skull Frog Lipo Ready Limited Edition M4A1 Airsoft AEG with 8mm Gearbox
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Red dot in images not included.


Sorry, this item is Discontinued

CanadaExport Compliant
This gun has a muzzle velocity rating (FPS) between 366 and 500, and is compliant for export to Canada.

No Payments + No Interest if paid in full in 6 months through PayPal Credit. Simply check out using PayPal and select PayPal Credit!

Red dot in images not included.Complete out of the box with a full metal receiver, fully upgraded 8mm gearbox that is LiPo ready from the start and emblazoned with aggressive Skull Frog trademarks. The King Arms limited edition King Arms Skull Frog M4A1 is ready to take on the field and is fully customizable for whatever role you need it to fill.


  • Aluminum alloy metal receiver with realistic weight
  • Lipo ready
  • 8mm factory upgraded gearbox
  • Skull Frog trademarks
  • 5 position LE stock
  • Limited edition design
  • Flip up rear sight
  • High capacity flashmag included
Length: 30.5" / 34", Adjustable (collapsed / Total)
Weight: 5.75 pounds
Inner Barrel: 363mm
Magazine Capacity: 450rd Flashmag. Works with Matrix, G&G, Tokyo Marui and other compatible M4 / M16 Series Airsoft AEG Magazines
Muzzle Velocity: ~420 FPS (Measured with 0.20g BBs)
Thread Direction: 14mm Negative
Gearbox: Ver 2 Full Metal, Fully Upgradeable
Motor: Long Type
Fire Modes: Semi/Full-Auto, Safety
Battery: 9.6v Small Butterfly Type recommended (Battery not included. Wired to the front with Tamiya connector)
Hopup: Yes, Adjustable
Package Includes: Gun, Magazine, Manual

Manufacturer: King Arms

Things you may need to get started:
    Battery and Charger – Required to power your AEG; use a high quality battery and charger for best results.

    Spare Magazines – Stay in the fight longer by bringing more ammo with you.

    BBs – High quality precision 6mm BBs recommended; Use 0.20g – 0.25g BBs for best results.

    Silicone Oil – Basic cleaning and lubrication maintenance help keep your Airsoft AEG in top working order.

FPS: 420

8 Customer Reviews

(Write a review)

by shiven v. on 01/25/2016
"This gun was AMAZING!!!.

Shoots very hard
Very sturdy
Looks amazing almost full metal
very accurate with .20s
Easily upgradable

Not a single one
by Sean S. on 01/12/2016
"Really good gun-

Ive had this gun for many months now and it still has the same fps and performance from out of the box. The range and accuracy is great and the fire rate (9.6) is perfect and keeps a steady stream of accurate bb's going. You can put a red dot sight on this and it will hit the dot depending how you adjust it.

In my opinion this is a worth your money gun if your looking for this style of m4. Ive taken it to the field countless times the past year and never had one problem with it.

Good fire rate
Sturdy body, feels good and realistic
Upper rails very solid
Hop Up is fantastic
Feeds great

Puts battery is in the hand gaurd, but it never bothered me.
by Nicholas D. on 09/19/2015
"I received this gun on time and it is awesome! I would recommended a Matrix 3000 motor or better for this gun!

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This item is Discontinued.

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