Certainly seems an upgrade from "just" having a 9mm pistol and spare mag(s).
https://www.airforcetimes.com/off-d...g-more-emergency-firepower/?utm_source=clavis
“The [GAU-5A] and four full magazines, 30 rounds [each], must all fit in the ejection seat survival kit,”...
The GAU-5A has an effective range of more than 200 meters. With its special locking system created by Cry Havoc, the rifle can be assembled and fired in 60 seconds with no tools. It is a semi-automatic rifle that uses a standard 5.56mm round and is capable of three-round burst.
https://www.airforcetimes.com/off-d...g-more-emergency-firepower/?utm_source=clavis