We're confused with the title of this video as it says "CAA Roni M4 Series Full Metal AEG" when it is an CAA M4S1 Carbine with the RONI Designation for the pistol-carbine kit of CAA. Anyway, we've handled the CAA M4S1 AEG and we're actually impressed by its build quality, good rate of fire, and of course the weapons accessories are also nice to look at.

It's not yet in stock at Evike.com, but you can check their CAA Airsoft area once this becomes available.