How easy it is to get it? Well, just make sure you have the DLC installed and that you follow these instructions.
Why bother, you may ask?
Well, perhaps you’d like to try one of these in ARMA3:
- PAH-1 Anti-Tank Helicopter (Bo-105)
- VBH-1 police / civilian version (Bo-105)
- Mi-2 P, T, R, Ch, SR, Platan, U, US, URN, URP, URP-G
You can learn more about this DLC here (and check some more screenshots as well).