Description
ETU System for TR166 MBR556WH Replicas
A special electronic unit made by a known and well-liked
by players G&G. The ETU system is intended for the installation in G&G
TR16 MBR556WH replicas equipped with gearbox G2.
The system enables programming following firing modes:
semi / full-auto / 3-round burst. The system cuts off power if it detects too
low voltage in the battery, thus prolonging its lifetime while a special sensor
detects a complete cycle of gears rotation, which prevents double-fire in semi
mode.
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