FDA is alerting the public to immediately inspect certain lots of Amneal and Impax epinephrine auto-injector 0.3 mg to ensure the yellow “stop collar” in the device is present.

http://www.fda.gov/safety/medical-product-safety-information/epinephrine-auto-injector-devices-amneal-and-impax-cder-alert-fda-alerts-patients-and-health-care