I had just killed another player and was going to loot his body and found that he had a KA-M assault rifle so I went to go put it in my inventory when I pushed square to put the gun in my inventory it didnt work even though I had enough space to transfer it into my backpack. Eventually, I was able to put the gun in my inventory and quick slot it to an open slot and put the weapon in my hands, I had put a normalized suppressor on the gun and put the gun into the equipment slot on my backpack, so I could see that the gun was on my back. I then leave the server to go to the main menu, once I'm there, I see that the gun is equipped on my character and I go to join a server a couple minutes later and when I spawn back in the weapon that was in my equipment slot had dissapeared and the suppressor that I had put on the gun was back in my inventory and all of the other items that I had looted from the dead player were still in my inventory but the KA-M assault rifle. I have been playing the game for a while now and this was the first time that I had seen the gun in game and when I finally get the gun it disappears from my inventory. This bug should be fixed immediately.