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KWA RM4 ERG Rotary Hopup Assembly



Product Details


  • High quality reinforced polymer construction
  • Rotary style adjustment knob
  • Factory direct OEM replacement part
New to the KWA ProShop is the RM4 ERG rotary hop-up assembly, which comes with all parts pictured. This will fit the new RM4 Series as well as the original PTS ERG line.

Compatibility: For KWA RM4 ERG and other compatible M4 / M16 Series Airsoft AEG Rifles
Material: Polymer

Manufacturer: KWA

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