Colt M16A1 GBBR Key Features

Fore-end

Steel CNC Classic "Birdcage" Flash Suppressor
Authorized Marking Heat Dissipation Thread Dummy Outer Barrel
M16A1 Style Front Sight Base(with bayonet mount)
Steel Front Sight
Metal Sling Swivel
Steel Handguard Cap
M16A1 Type Nylon Handguard with Aluminum Heat Protectors
Dummy Gas Tube
Steel HOP Base
VFC Outer Barrel Base HOP-UP Adjusting Design
Metal Barrel Nut

Receiver

Colt Full License Authorized Colt M16A1 Marking
Carrying Handle Upper Receiver
Steel A1 Type Windage Dial Adjust Rear Sight
Classic M16 Type Lower Receiver(With reinforced ribs)
Early Model Fire Selector
A1 Type Grip
Early Model Charging Handle
Early Type Steel Dust Cover
Steel Bolt Catch
Lower Receiver with US DOD Stamp
Early Type Steel Dummy Forward Assist Knob

Stock

AR Style Fixed Stock
Buttstock Built in Steel Sling Slot
Anti-slip Pattern Butt-Pad(with trap door and store space for maintenance tools)

FCS

Bolt Carrier Group in Classic Type
Steel bolt cam pin
Steel Disconnected Set
New Design "Non-cut lever" Steel Hammer Set
Improved New Design V3 Firing Pin Parts
New Setting Buffer Spring
High-Speed Weight Increase Buffer Unit (Heavy Buffer)
Steel Buffer Stop

Magazine

VFC V3 New 20Rd Gas Magazine
New Design Bolt Stop Latch with Non-BBs Fire Function
Hidden Gas Fill Valve
Colt Full License Authorized Magazine Base Plate