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Airsoft GI Custom ERG Mk18 AEG Airsoft Rifle

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The AR15 was originally designed as part of the U.S. military's initiative to develop a lightweight and smaller caliber weapon as the standard infantry rifle. This innovative weapon utilized aircraft technology to lighten the rifle's overall weight. This led to the creation of the M16, which has served as the backbone of the U.S. Military for more than 40 years. The Airsoft GI Custom ERG is based off the KWA ERG to emulate as close to the real firearm counterpart as much as possible. The KWA RM4A1 ERG is an AR style, Electric Recoil Gun [ERG] that utilizes the patented Kinetic Feedback System [KFS]. This gives the user felt recoil with every trigger pull. All ERG Series rifles feature a mechanical/electrical cut-off system that works in conjunction with the ERG magazines to feed every BB and stop firing when the magazine is empty. Highlighted features of the RM4A1 ERG are metal alloy receivers, MilSpec buffer tube and stock, a flat top rail, which allows operators to customize their weapon configuration, and an operational bolt catch feature that provides the user with unparalleled realism by mimicking fundamental AR15 weapon manipulation. Externally, the front of the rifle features a Madbull MK18 RIS, constructed out of aluminum and provide a plethora of rail space to mount accessories such as those included with this gun. Similar to real AR15 style rifles the RM4A1 ERG's modular design allows limitless customization options to best suit the individual's training and MilSim needs.

Manufacturer: Airsoft GI
Model: MK18 ERG
Muzzle Velocity: 390-410 FPS
Magazine Capacity: 30 / 60rds
Color: Black / Tan
Package Includes: Gun, Magazine, Optic, Barrel Extension, PEQ Box, Hand Stop, Gun Bag


  • KWA RM4 A1 ERG Base Rifle
  • Madbull 9.5in Daniel Defense MK18 RIS
  • Magpul XTM Hand Stop Kit ( Dark Earth )
  • Magpul Ladder Rail Cover
  • VFC PEQ 15 Illuminator Laser & LED Light Combo
  • Knight's Armament QDC Quick Detach Barrel Extension
  • Tienly GT-35000 Ultra Torque Performance Motor
  • Madbull Ver. 2 Precision AEG Inner Barrel
  • G&G GT1 Red Dot Sight
  • Madbull Daniel Defense Low Profile Gas Block
  • NcSTAR 36in Gun Bag

Please Note:

  • Battery and charger are NOT included.
Manufacturer: Airsoft GI
Muzzle Velocity: 390-410 FPS
Magazine Capacity: 30 / 60rds
Fire Mode: Safe - Semi - Auto
Color: Black / Tan
Material: Aluminum
Package Includes: Gun, Magazine, Optic, Barrel Extension, PEQ Box, Hand Stop, Gun Bag
Outer Barrel Length: 10.5in
Stock Type: Crane Stock
Handguard: MK18 RIS
Sight: GT1 Red Dot
Overall Length Extended: 36.5in
Overall Length Retracted: 33.5in
Primary Build Material: Aluminum
No reviews | Write a Review
Is the gun wired to the front or the back?

1672 days ago
Kaimana T

(I have this same question)
Staff Answer:
It should be wired to the rear.

1672 days ago
1 answers
1 asked
Search Tags: M4 Field Carbine Retractable Stock High Capacity M4A1 ERG Kinetic Feedback System Realistic Recoil

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All airsoft guns are required to have the tip (1/4 inch) of the barrel permanently colored in blaze orange. No person may openly display or expose any imitation firearm (replica firearm), in a public place. The term "public place" means an area open to the public or exposed to public view and includes streets, sidewalks, bridges, alleys, plazas, parks, driveways, parking lots, automobiles, whether moving or not, and buildings open to the general public, including those that serve food or drink, or provide entertainment, and the doorways and entrances to buildings or dwellings and the grounds enclosing them.

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