BRAND WALDO DYNAMICS®
The MWS Hop-Up Arm by WALDO DYNAMICS® is a high-performance upgrade designed to improve range, accuracy, and consistency for Tokyo Marui MWS GBBR platforms.
This component is engineered to optimize the performance of heavyweight BBs up to 0.45g, providing straighter trajectories and enhanced effectiveness on the field.
Manufactured from aircraft-grade aluminium, the hop-up arm offers excellent durability, lightweight performance, and long-term reliability during intensive gameplay.
The nub contact surfaces are precision engineered to ensure highly consistent performance shot after shot.
The slick finish also provides a distinctive technical appearance inside the hop-up chamber.
Main features
- High-performance hop-up arm for MWS GBBR platforms
- Improves accuracy, range, and consistency
- Optimized for heavyweight BBs up to 0.45g
- Aircraft-grade aluminium construction
- Precision nub contact surfaces
- Reliable and consistent performance
- Durable slick finish
- Compatible with MWS platforms and compatible clones
Compatibility
- Tokyo Marui MWS Gas Blowback M4
- Various MWS system clones
Main advantages
- Improved shot stability
- Better heavyweight BB performance
- Enhanced long-range accuracy
- Ideal upgrade for performance-oriented GBBR builds
Installation: installation by experienced airsoft technicians is recommended, although the hop-up arm is generally easy to install.
Note: heavyweight BB performance also depends on the hop-up bucking used.

