The new generaion MOSFETs from Perun Airsoft, such as the AB++ are available at Tanie Militaria... "AB ++  from Perun Airsoft is a modern MOSFET system additionally equipped with an active brake, programming mode, diagnostic mode and electronic fuse. We receive it with  factory-installed cables and a T-Connect plug , making it ready for installation in an  ASG replica .

The AB ++ model is characterized by small dimensions combined with above-average durability. Controlling the micro controller translates into resistance to the so-called contact vibration. In addition, it is also equipped with a Li-Po battery protection mode.

The device modes are operated using a button located on its surface and a multi-colored LED diode. The functions available to the user include:

• setting the userii mode of shots in place of automatic fire
• active brake (AB), preventing choking of the main spring and the phenomenon of double shot (overspin)
• stopping the piston in the rear position (precocking)
• DMR mode: setting the minimum intervals between the shot / series
• limiting the rate of fire of the replica
• warning of excessive battery discharge
• reset to factory settings
• diagnostic mode, helping to find the cause of a possible problem
• contact control

The device is equipped with an  electronic fuse that activates automatically when a short circuit or jam is detected. The fuse does not require replacement, it can be used many times.

The manufacturer does not give any restrictions on the configuration in which the system is to be used, both in terms of rate of fire and power. The voltage range should be between 7V and 17V."