Redline N7 HPA GEN2 FCU Engine Hop Up Parts It can also prevent compression

It can also prevent compression of the main spring for a longer time

This IS the perfect DMR airsoft rifle setup

encourages a high hand hold under the receiver for maximum recoil

It's a bit heavy to pull back and fire

Redline N7 HPA GEN2 FCU Engine Hop Up Parts It can also prevent compressionRedline N7 HPA GEN2 FCU Engine. The newest electro HPA airsoft engine from Redline. Comes in V2 (M4) or V3 (AK nozzle) style. Can be customized with different aftermarket nozzles for specific gun types. Uses standard HPA 7. 4v JST batteries (Valken or Hype). Manufacturer specs: The Redline N7 Gen2 is a Patent Pending HPA drop in cylinder replacement system. It is an updated version of our legendary N7. The very first single solenoid, true closed bolt