Safe Gun Storage Act of 20 21 This bill requires safety standards for firearm locks and safes. Under such standards, firearm locks must be reasonably designed to (1) prevent the firearm from discharging while the lock is activated, and (2) prevent unauthorized access to the firearm. Further, firearm safes must be reasonably designed to (1) secure firearms, and (2) prevent unauthorized access to the safe through physical manipulation or damage.