G&G TR16 GMSII MK1 Light Weight Polymer 556 The Hopup Chamber M4W unit

The Hopup Chamber M4W unit has a precision rotary dial design for fine hopup adjustments

4 inches (Retracted / Extended)

Lockback feature locks bolt open after last shot on compatible guns

Works great on handguns and longer guns alike

G&G TR16 GMSII MK1 Light Weight Polymer 556 The Hopup Chamber M4W unitTR16 GMS II MK1 LWP Pre Installed with GATE ASTER II Bluetooth: The GATE ASTER II Bluetooth has an optical sensor for trigger sensitivity and sector gear positioning. This is fully programmable via GCS mobile app. Includes the following settings: Precock, fire selector options, active braking, and trigger sensitivity adjustment. Additionally includes a built in diagnostic feature, for those who want the utmost details about their rifle operations. In