Compatibility: For most HPA Polarstar Engines in standard M4/M16 platforms
Color: Blue
Features
Machined from a solid aircraft aluminum block with tight tolerances to achieve the most accuracy, consistency, and durability
Performs accurately and consistently with HPA Polarstar Engines in standard M4/M16 platforms
Precision rotary dial knob for fine hopup adjustments
Re-engineered the precision hopup lever and 4mm bucking nubs to perform the best with R-hop and Standard hop to keep the BBs shooting accurately and consistently on every single shot
Removable steel pivot pin for ease of setup and maintenance
Full compatible with most aftermarket soft and hard rubber buckings without losing FPS or dropping BBs during use
Wisely equipped with an interchangeable inlet adapter OD11mm to ensure the hopup unit is inserted exactly in the center of the 11mm inner bore HPA engine nozzle outlet without wobbling
