Black Ops Airsoft M16 Vietnam Edition, Air & Demonstrator Guns, Sports & Outdoors

I know most M16/AR-15 parts are interchangeable, but is it possible to make an M16A1 clone with the only difference being an M16A4 Upper receiver? - Quora

BBTac BT16-A1 Airsoft Gun Vietnam Model Spring Action Airsoft Rifle Full Size, Black : Sports & Outdoors

CYMA Sport Full Metal M16 A1 Vietnam Airsoft AEG Rifle (Package: Add 9.6v NiMH Battery + Charger), Airsoft Guns, Airsoft Electric Rifles - Airsoft Superstore

Black Ops M4 Diamondback Airsoft AEG Rifle - Automatic Airsoft - Shoot .20 .25 : Sports & Outdoors

M4 Diamond Back Full Metal Airsoft Assault Rifle - Black Ops USA

BBTac Airsoft Gun Package - Dark Ops Collection - Powerful Spring Rifles, Shotguns, SMGs, Pistols, BBs - Great Starter Pack : Sports & Outdoors

Black Ops M4 Diamondback Airsoft AEG Rifle - Automatic Airsoft - Shoot .20 .25 : Sports & Outdoors

ArmaLite AR-10 - Wikipedia

M4 Diamond Back Full Metal Airsoft Assault Rifle - Black Ops USA

CLASSIC ARMY M15A1 VN VIETNAM AIRSOFT AEG RIFLE - BLACK - MiR Tactical

BBTac Airsoft Gun Package - Dark Ops Collection - Powerful Spring Rifles, Shotguns, SMGs, Pistols, BBs - Great Starter Pack : Sports & Outdoors

Soldier with m16 hi-res stock photography and images - Page 2 - Alamy