It looks like you're new here. If you want to get involved, click one of these buttons!
Who knows how to attach a weapon to the players hand once collided with
You can set the collided object as a child object of the player, and move it's transform to match it's desired position in the hand of the player.
That way, when the player's hand moves so does the weapon.
Keep on Creating!
Justin of JustinTime Studios (http://unity3d.expert)
Make the weapon as child or inherit it and place the position