The N7 Milsim by Redline Airsoft is a Patent Pending design HPA cylinder replacement kit for Airsoft AEGs. It is fully mechanical, semi-auto only, and fires from a true closed bolt other HPA cylinder replacement kits on the market.
With the N7 being fully mechanical, there is no need for electronics such as an FCU or battery to power it. This also means that rain, snow, and other extreme weather conditions cannot affect performance as there are no electronics to be damaged.
Another unique feature of the N7 Milsim is that it uses a fixed volume and mechanically sealed dump chamber. Rather than relying on solenoid dwell to control the volume of air used to propel the BB, the N7 Milsim fills an internal chamber at the pressure set by the users external supply regulator. When fired, this air chamber is mechanically sealed off from the supply and the chambers contents released down the barrel to propel the BB. This feature contributes to the N7 Milsim's excellent shot to shot consistency, with no air wasted do to improper dwell settings.
The N7 Milsim is also very simple to install and tune. As there is no poppet dwell to tune, all you need to do is set your supply regulator's output pressure to match the Joule energy level required. The proper amount of air needed for each shot regardless of BB weight, barrel length or any other factor is all that is released.
You can also convert the N7 Milsim from mechanical-pneumatic to a standard electro-pneumatic N7 with an optional conversion kit. The N7 Milsim is made in the USA!
If you are looking for a simple, reliable, and performing HPA engine to replace your AEG cylinder, the N7 Milsim is what you need!