[?] ValveBiped.Bip01_L_Hand / anim_attachment_LH

Just a quick question; is there any way to make it so you can attach the left to the corresponding bone on the weapon’s world model?

I have so far fixed one of the weapons I’m using & the coordinates are lining up:

However, I’m not sure if it’s actually attaching it there or if it’s just an illusion on my side.

Thanks in advance.