Model Works MWC CAR-15 MWS GBBR  (End Dec Delivery)
 
GBBR manufactured by Model Works Taiwan (MWC)
Precision CNC-Machined Aluminum Upper and Lower Receiver
Nearly all internal components are made of steel, such as the receiver takedown pins, rear sight, stock fixed rod, outer barrels, front sight flash hider, triangle handguard cap, delta ring, chamber, and flash washer.
M16A1 Pistol Grip