GFCI Receptacles for Aluminum Wire
I performed a search awhile back for GFCI receptacles that were rated for use with aluminum wire and I found that none of the common manufacturers make an Aluminum compatible receptacle. The only solution I found was to use copper pigtails.
Use of the Copalum devices requires that you locate a trained contractor that is certified to install the devices with the leased AMP equipment. Another good solution for connecting copper pigtails to aluminum wire is to use Alumicon aluminum to copper lugs. The lugs are small, insulated, terminal bars that are rated for both aluminum and copper wires, so there is no issue about twisting aluminum and copper wires together as when you use an Ideal 65 twist connector. The alumincon connectors are expensive ($5+ each) but they work great with no downside other than the cost.