Features
- 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