Animation not working?

So im working on a gun animation, and closely following a tutorial, but when i pick up the gun instead of switching from the unarmed animation, which works, and going to the idle pistol holding animation, my arms just dissapear and the gun is just floating to my side near my leg. Not sure what the problem is…

Okay so after a bit more testing, the arms aren’t dissapearing, they are rotating 90 degrees to the right and the gun just isnt attached where it is supposed to be. I have no clue how to fix this.

Can you post BP of this functionality