The AEG is based on the CQBR carbine with a sightless gas block and a full length accessory rail which is used by NSWC-Crane, Coastguard, the EOD and Marine Force Recon operators.
The GC18 sports a large 10.5" handguard with 20mm rails on all sides.
Being a GC model, it comes with a full metal upper and lower receiver with red and white selector markings for safe, semi and fully automatic modes.
This is an ETU (electronic trigger unit) enabled AEG, so internally you will find an electronic trigger switch in the gearbox and control mosfet in the buffer tube.
The ETU gives the GC18 a phenomenal trigger response.
This is the tan variant, so it ships with a tan coloured pistol grip, rail panels and modstock.
The modstock houses the battery (not included) and is six position adjustable.
Comes bundled with foldable metal front and rear rights.
Ride side lower receiver selector indicator.
10.5" outer barrel.
All GC models from G&G ship with a 6.04mm inner barrel and a high torque 25k motor.
Includes a 450rd metal high capacity Tan magazine (winding required).
Also compatible with most standard AEG spec Mid Cap magazines.
Also ships with four tan coloured rail covers.
White stamped markings on the lower receiver.
Battery here, Charger here.

Fires at: 300-305fps
Weighs: 2.75kg
Length: 740-870mm
Battery: 7.4V/11.1V 1300-1600mAh sticks (not included/11.1V for near exclusive semi auto use only)
Charger: Not included

G&G

G&G GC18 MK18 MOD1 - Tan