Playing as Germans in a custom match in Tunisia, I had an assaulter squad using the short barreled Event MP-35’s. I had my engineer who was carrying a Scotti Mod X semi auto, and had just lost one of my MP-35 carrying soldiers, so I dropped the Scotti and picked up what I thought was my short barreled MP-35 from my dead soldier, but had instead picked up an enemy MP-35/1 (Enemy because the computer had put my German squads on the side of the Allies). Anyway, When I went to use it, it had only 32 rounds, which I thought was odd since I had barely fired it. Then I noticed it was NOT my Event MP=35, but in fact the MP-35/1. So, I built an ammo crate and found out that I could not reload the damn SMG because it was an enemy weapon. I ended up dropping the MP-35/1, then dropped an MP-35 Event SMG from another soldier, reloaded that SMG, then dropped the weapon again and picked it up with the original soldier. The enemy MP-35/1 was fully reloaded, as well as the Event SMG, so, I learned something new today. 
However, I had to do this EVERY time I wanted to refill my ammo with the enemy MP-35/1, so that kind of sucked.
So, if I did not explain it good, when I reloaded the event MP-35, that ammo transferred to the enemy MP-35/1 when the soldiers had swapped guns. I just thought that was interesting since this is the first time I have ever reloaded my smg from an enemy ammo crate. 
