The U.S. Consumer Product Safety Commission (CPSC) has issued a final rule, effective December 9, 2013, revoking certain requirements under the Code of Federal Regulations relating to caps intended for use with toy guns and toy guns not intended for use with caps where these guns exceed certain peak sound levels CPSC notes that the existing regulations have become “obsolete and have been superseded by the requirements of ASTM F963,” which applies more broadly to sound-producing toys and allows for the use of more precise and readily available test equipment for measuring sound. CPSC observes as well that the ASTM standard requires fewer measurements and would increase testing efficiencies by using more automated equipment. CPSC also revoked an exemption provision, noting that no manufacturers currently participate in the program. See Federal Register, November 7, 2013.