Seems like it's a non-modified gun too.
If you don't watch the vid:
1) He was doing a match
2) Gun was holstered and as he went to raise his hands over his head (starting position), the gun fired
3) Shirt was tucked in, nothing in the holster to cause the trigger to move
4) His EDC folding knife took the force of the bullet
5) Slight bruising, no hole
6) Sent gun to SIG and they said defective spring thingy
7) He didn't want the same gun back, he got another SIG replacement instead

He's glad he wasn't AIWB
9) Gun is post drop safe modification (2019 model)
10) No mention of any modifications done it it, but it sounds like it's factory original
11) Bladetech holster used OWB