7 Days to Die (Bug that has since been patched in alpha 7.2 version of the game)
This is a breakdown bug that allows you to place a weapon or ammo in the completed crafting area to duplicate the parts and then be able to craft a new fully repaired copy of it without losing the original copy. You must of course have one copy to start with and if you have cheat mode on it is much easier to just press "z" and get yourself a copy that way.
To do so enter your inventory/crafting menu, place the breakdown item in the completed area as you would normally do if you were going to salvage a part. You will see the parts in the crafting area, but down take the salvage part. Instead exit the inventory and then reenter your inventory. All of the parts that were in the crafting area will be moved to your inventory and the breakdown item will still be in the completed area.
You have now duplicated the parts of the item but will still need to craft them into a completed item. I think this is how the ammo should be done anyway, minus the duplication but retaining all of the parts. The guns however is quite a bit of a cheat.
Just thought that it was interesting to stumble upon and maybe prank a friend about stumbling on a massive stash of weapons and ammo supplies. So use it responsibly.
Alpha 7.1 Build
Being that this is an alpha game I expect that they will fix this bug. Just wanted to put up a video demonstrating it. I assume that someone will report this or I may even report it if I figure out how you do that.
Please don't over use this bug on competitive servers.