.380 Mystery Magazine??

[KMO]

OK magazine detectives...My buddy cleaned out his man cave & brought this .380 magazine over to my man cave (great strategy on his part). Anyway, anyone have a clue what this mag fits? It's 3 inches tall by 1 inch...no markings anywhere on it...

 

[KMO]

My other buddy figured it out...It's from an AMT Backup 380. Anyone own one of these? They seem to be the inspiration behind the recent flood of polymer pocket .380's on the market today. I'd like to find a home for this magazine...

 

[RUT]

PM sent........