I don't think so...not a Badger M5 anyway. The back of the trigger guard is nearly straight on them, not curvy like this one. Also, the M5 doesn't get thinner just behind the latch like this one does (pic 2).
I'm fairly certain that it's not from Badger, CDI, APA, PTG, Atlas Worx, Surgeon, or Hooper Ordnance. I'm sorry that doesn't help you much but at least you know who didn't come from.