The VFC Colt M16A2 Carbine Airsoft Rifle is the third gas airsoft rifle that is not an M4 but a carbine variant of the M16, the Colt M733 and the Colt XM177E2 gas airsoft rifles came before this. This model is based on the Colt Model 727, which has the following features: a 3rd generation buffer tube, giving it 4 adjustable stock positions, a short ribbed handguard, a Safe, Semi, Auto fire control setting, A2 style rear sights, a forward assist and a case deflector. This  rifle also features full trademarks, due to the fact that this rifle is a licensed airsoft replica. The rifle has period correct, early styled deep engraved Colt markings on the receiver, as well as on the bottom of the 30-round gas magazine that it comes with.
Internally, as being produced by VFC, it runs on the tried and tested VFC V3 M4 / AR 15 gas system and it has an updated valve knocker system, a zinc bolt carrier, and of course as mentioned earlier, a VFC 30 round V3 gas magazine to feed the system. 
FEATURES
Fully Licensed by Colt & Cybergun
Faithful Replication of the Colt Model 727 / M16A2 Government Carbine
Retro Styling
Zinc Bolt Carrier & Magazine Catch
4 Position Buffer Tube
A2 Style Pistol Grip and Front Iron Sight
Favoured Carbine of Delta Forces during the 1980s - 90s
Able to take Standard VFC V3 M4/AR15 Gas Magazines