I am replacing the range this was connected to, and would like to provide a 4-wire connection via a 14-50R by using the steel armor cladding as ground (as discussed in Can I use the metal cladding of a cable as ground for this range installation?).
For easy installation of the receptacle, I am hoping to use this product, which has a metal back with a 1 3/8" punchout. The receptacle product comes with a strain relief clamp, but I'm unsure whether it's appropriate for making a ground connection to armored cable. Is this clamp OK to use? If not, what is the right sort of clamp to use in this situation? I've included some photos of the clamp: