Adding Rigidbody to an Object on Collision by Raycast?

I have a plank shelter type of building and I want it’s planks to fall off(add a rigidbody)
when I shoot it with the raycast(bullets).
This is an FPS game by the way.

My current script can add force to a rigidbody. BUT, I need HELP making the planks on the plank building to add a rigidbody to it when it’s hit by a raycast.

This is my current code, Please please refine/fix it and post back please =)

function RayShoot (){


			
   
   																			    
		var hit : RaycastHit;

				
				 var direction : Vector3  = transform.TransformDirection(Vector3.forward);
         
				Debug.DrawRay(transform.position , direction * Range , Color.blue);
				
				if(Physics.Raycast(transform.position , direction , hit, Range)){
		
				if(hit.rigidbody){
					  
			    hit.rigidbody.AddForceAtPosition( direction * Force , hit.point);
			    
				}
				if (hit.gameObject){
				GameObject Plank = GameObject.FindGameObjectsWithTag("plank");
				Plank.AddComponent.rigidbody;
				}
				
				}
		
				
				
				
				
				BulletsLeft --;
				 
			
				if(BulletsLeft < 0){
				
				BulletsLeft = 0;
				
				}
				
				if( BulletsLeft == 0 ){
				
				if(Input.GetKey(KeyCode.R)){
				
				
				Reload();
				
				}
				
				
                }

				}

That would look like this:

    if(Physics.Raycast(transform.position , direction , hit, Range)){
      
      if(!hit.rigidbody){
          hit.gameObject.AddComponent(Rigidbody);
      }
      hit.rigidbody.AddForceAtPosition( direction * Force , hit.point);

      }