The ASHU (Airsoft Systems Hop Up) with empty magazine detection for the ASCU Gen.3 (ref. 17534) will, when it is connected to the ASCU, detect when the magazine is empty and will stop the AEG from dry-firing. By operating the bolt catch after a magazine change, firing can resume.
Empty magazine sensor.
Precise adjustments with clicks.
Optimized for High-performance Hop-up rubbers.
Made from shock-resistant reinforced technopolymer.