So after a long hiatus I'm back and lovin the updated visuals and gameplay of Arma 3. Quick ? Friend and I play often and I usually host maps I make or download from here or armaholic. I just want to confirm that, for example for us to both use the .50 cal rifle addon, we both need to have it? Or do I ALSO have to have a bikey file? Many mods I've downloaded wont allow him to join my game, as it connects and immediately disconnects. Can y'all school me a little better? Tanks guys, and it's good to be back!