Originally Posted by CB3

Polymer makes the gun lighter for carry. It is much cheaper to manufacture. It is easier and cheaper to configure with grip panels and stippling. It is generally more comfortable to hang onto than metal.

None of these attributes equate to a gun with a polymer frame being better than an all metal gun. They are just different and have different uses.

Stiffening the polymer dust cover with a metal skeleton doesn't confuse me at all.