Evolution Tango Down ECR-4 (Tan)


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Evolution Airsoft built a beautiful full metal replica with the Tango Down ECR-4 and one that’s fully licenced by Tango Down itself. Tango Down is manufacturer of high quality parts that makes weapons both lighter and more efficient and is a large supplier for American armed forces and law enforcement.

Internally the Evolution Airsoft Tango Down ECR-4 is put together smart and durable with steel gears, ball bearings, an integrated MOSFET to bring both reliability and durability of the trigger to a high level and a high torque motor. The progressive wound spring is quitter than a linear wound spring, prevents gearbox chatter and is softer in the initial compression to get harder when compression continues. It can be reached very easily after simply removing the buffer tube without the need to dismount the gearbox. The stock can be adjusted in six positions on the buffer tube and features a quick detach sling swivel that can be mounted both left and right.

The Evolution Airsoft Tango Down ECR-4 has foldable and removable open sights. The front sight is adjustable in elevation and the rear sight is adjustable in windage while also having two sight options. We supply this airsoft replica including a magazine and two rail grips that can be mounted on the handguard that features Weaver/Picatinny rails on all sides. The lower accessory rail can be taken off with two quick detach clamps.

All AirSoft Guns of the Tango Down series are extremely true to the original with elegant Tango Down license markings made of robust full metal . The finish and the level of detail in this series are more than impressive.

The Evolution Tango Down series is characterized above all by high-quality internals and the following properties:

  • unique serial number
  • Full metal body
  • CNC Free-Float Aluminum 22mm RAS Railsystem
  • TangoDown front handle and rail covers
  • built-in MosFet
  • Aluminum flip-up Battle Sights
  • working bolt-catch system
  • CNC aluminum buffer tube
  • Metal hop up chamber
  • High torque motor
  • reinforced gearbox (tuning up to M120 possible)
  • Reinforced steel gears
  • 8 mm bushings

The Tango Down ECR-4 AEG from Evolution AirSoft , manufactured by King Arms , delivers 330 fps / 1.0 joules out of the box. The Toprail is a 22 mm rail which allows mounting for many optics.

It is also practical that the Tango Down AEG series is completely compatible with Tokyo Marui M4 replicas . All magazines or tuning parts can therefore be used.

The Evolution Tango Down ECR-4 AEG comes with a mid-cap 130 BB polymer magazine, Tango front handle and Tango rail covers.


  • Shot modes: Safe / Semi Auto / Full Auto
  • Material: aluminum & steel & nylon fiber
  • Length: 775 – 858 mm
  • Weight: 3,140 grams
  • Muzzle velocity: 330 fps / 1.0 joules
  • Recommended battery: 9.6V NiMh nunchuck or 7.4V LiPo with Tamiya Small connection

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