No, they will not.

You know why the airlines begin to limit the use of aluminum alloys in the planes they are building?

Aluminum has this fatal flaw of metal fatigue. It breaks up without any warning that can be detected unless you have the cause and the resources to pay the required attention to the problem. Until that technology is a commodity AL is in the corner.

Firing guns is a risk you take. You may kill yourself by faulty hardware, you may kill someone or you may get killed.

That's it.