From Wolverine Airsoft we have the Inferno Gen2 HPA Engine with Spartan Electronics.
The GEN 2 Inferno is the culmination of a great deal of work to take the next step forward in the development of HPA technology. Over the past couple years since we launched the SMP, multiple other companies saw the value of this type of technology and have attempted to replicate its performance. The Gen2 once again leaves everyone far behind.
The GEN 2 Inferno features a revolutionary single solenoid, independent poppet and nozzle design that sets a new standard for a drop in kit. Particularly, it is designed to solve the "open bolt problem". It is a hybrid design which keeps the advantages of an open bolt system: easy tuning, no first round dry fire, efficiency, etc... and adds the simplicity of easier hop up tuning that closed bolt systems have traditionally offered. In addition, it further improves the efficiency over our previous systems by an estimated 10-15%.
Features:
Patent Pending independent poppet and nozzle design
Hybrid design allows pause between bb loading and bb firing
Improves hop up performance with a wide range of stock and aftermarket options
Still uses Wolverine Airsoft's Patent Pending Imbalanced Poppet
Backwards compatible with all Wolverine Airsoft electronics.
Still uses bullet proof direct solenoid fired design
NO ADDITIONAL CRITICAL ORINGS--> No negative impact on reliability!
Estimated 10-15% efficiency improvement
Specification:
Input Pressure: 60-140PSI
Output Energy: 1-3J Adjustable (build dependent)
ROF: 5-35RPS Adjustable
Battery Input: JST 6-9V (Not included)
Dwell: Fully Adjustable
Electronics: Compatible with all Wolverine Airsoft Electronics