Phone: 888.992.4867
Hours: Mon-Sat: 10am - 6pm
Address: 1900 E Baseline; Cornelius, OR; 97113

Airsoft Outlet NW Blog

More Views


Quick Overview

KWA's second gen ERG with rear wiring harness

Regular Price: $280.00

Special Price $140.00

Out of stock



 (COMING November 2015)

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, an operational bolt catch feature, and a rear wired wiring harness for easier installation of after market rail systems than previous ERG models. 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.


  • Inner Barrel Length: 395 mm
  • Inner Barrel Diameter: 6.05 mm
  • Outer Barrel Length: 36.83 cm [14.5"]
  • Velocity: 390-410 FPS
  • Simulated Recoil
  • Mechanical / electric cut-off system
  • Full metal alloy flat top upper receiver
  • Full metal alloy lower receiver
  • Adjustable one piece hop-up
  • 3GX gearbox with KFS
  • Rear Wiring
  • 2G high performance bucking
  • Adjustable front and rear sights
  • Semi-automatic & automatic select fire
  • Removable carry handle
  • Realistic construction and field stripping
  • Fiber reinforced hand guard
  • 6 position collapsible battery crane stock
0 Review(s)

Unmatched quality and service!

Founded in 2004, Airsoft Outlet Northwest (AONW) is the leader in quality airsoft and tactical gear in the Pacific Northwest. We're dedicated to providing the best service and products for our customers! We believe in honest and fair treatment of our customers while delivering superior value at a reasonable cost. That's why we offer the best warranty in the industry by providing in house warranty service on many quality brands like Classic Army, G&G, TopTech, and Echo-1. If you buy from us then you can rest assured knowing that you'll be taken care of.