Help with merging

Help with merging

I'm working on a naga model at the moment, but I can't seem to get the weapon to attach properly. The base model is the Myrmidon, and I'm trying to attach the Faceless club to it. I attached it the bone Bone_ArmHand1_Left, and scaled it and moved it around appropirately, but it keeps messing up when I view the animations... I'm assuming it's either attached to the wrong bone or it's not rotated properly, but anyways, can anyone lend me a hand? (no pun intended)

It could be that you didn't place it properly, or you attached it to the left hand when it should be attached to right or something like that

Or u atached to the correct hand , but u have to positionate corretly, like moving or rotate until its in correct position.