I know some people have been requesting this for quite some time! This couldn't have been possible without techguy1214 so a huge thanks goes out to him!
This is the absolute STOCK M919N Firmware. (THIS IS NOT ROOTED!)
EXPERIMENTAL: This is UNTESTED by me, I compiled this ODIN tar file using the same structure the T-Mobile ODIN File has. I do not have the MetroPCS version of this phone, I have the T-Mobile version. But I figured enough people wanted it so I would try to make it happen.
I will not be help responsible if you brick your device or flash this incorrectly and your phone ends up blowing up. You have been warned.
Because this is not officially signed by Samsung, I believe your flash counter will go up, use Triangle Away to reset your counter!
Download the TAR file: https:// copy[.]com/lyMNNbzjaNYm
Remove the space in front of copy and the  from the dot in the link as I can't post links yet.