The Bulgarian company, Airsoft Systems, now have their products available in the USA, with the ASCU MOSFETs and the Smart Hop-Up for M4 airsoft rifles now available at Airsoft Outlet Northwest... "Airsoft Systems is one of the best programmable MOSFET units, and one of the original drop-in trigger replacement boards for AEGs.

ASCU Airsoft Systems Control Unit Version 3 MOSFET Gen 3+

The Airsoft Systems Control Unit is a fully featured Burst Fire MOSFET. These integrated directly into the trigger area of the gearbox and monitor the mechbox for correct operation. Even with a partial trigger press, the gearbox will always fully cycle, and it will cycle correctly no matter when you let off the trigger in full-auto. Additionally, gearbox monitoring allows the MOSFET to shut off current if the gearbox fails, preventing further damage.

With Lipo low voltage protection built in, 4 to 7 mode selection options, and installation hardware and components included, these are a complete MOSFET upgrade option. At only $99, they also come at an unbeatable price.

ASHU Airsoft Systems Hop Up Unit SMART M4 Hop Up Chamber

Additionally, the M4 ASCU MOSFET is capable of delivering PTW type operation when combined with the ASHU M4 Hop Up. This will detect when the magazine is empty and stop the gun from dry-firing. Reload the mag and press the bolt stop to keep shooting. When paired with the upgraded function from the MOSFET trigger, this makes almost any AEG into a high performance training rifle.

Airsoft Outlet NW has the Airsoft Systems MOSFETs and Smart Hop Up in stock, and can install, tune, and program these for any needs. If you've been wanting a MOSFET in your AEG, but didn't want to wire and solder and jam a unit into the stock area, pick up the ASCU. These are powerful, streamlined, and affordable, despite being one of the best in terms of features.ining rifle."