- Imported from Japan
- Suitable for MARUI M4 MWS Series GBBR
- Material : Aluminum Alloy / Steel / Stainless Steel / Brass Alloy
* Package Includes :
- Upper Receiver (Aluminum)
- Barrel Extension (Brass)
- Hop Up Chamber (Brass) w/ Rubber
- Hop Up Adjustment Dial (Brass)
- Forward Assist Knob Assembly (Steel / Stainless Steel)
