So the Main needs to reproduce this issue:

• I have a pristine P1 pistole with a surpressor on it and a full magazine in the weapon.
• I also have Free slots in my inventory.

The procedure to reproduce is as follows:

1. I log in to my private shard stable 0.55 Server
2. I drag my mountain backpack with free slots out of my character to the ground.

That could also be another clothing item which gives u free inventory slots.

3. Than I take the P1 pistole also to the same spot on the ground.
4. After that I take my mountain backpack back in my inventory.
5. The next step is that i drag the magazine from my P1 pistole on the ground into a free slot in my backpack.
6. U should see that the magazine I dragged out of the gun on the ground, should now be in my backpack, but also in the pistole.
7. Now thats the same magazine. U can see that by dragging this magazine from that inventory slot to another. It should also be highlightet in the pistole on the ground.
8. After that u can put your pistole back in your backpack in a 4 slot free space.
9. Now u relogg on the server and you should have +1 8Rnd P1 Magazine.