Destroying Instantiated Prefab from AssetBundle

Hello!

A bit of a last resort after spending the past week or so trying to find a solution via the forums, I'm able to instantiate a model within the parent GameObject, however I'm having trouble destroying the object after its been used. Heres the code used to download and instantiate the model (Which works fine, just unsure whether some may need reworking for the destroy to work).

         while (!Caching.ready)
             yield return null;
 
         var www = WWW.LoadFromCacheOrDownload(mARData.ModelUrlAndroid, mARData.TargetVersion);
         yield return www;
         bundle = www.assetBundle;
 
         if (!string.IsNullOrEmpty (www.error)) {
             Debug.Log (www.error);
         } 
 
         else {
             model = (GameObject)bundle.LoadAsset(mARData.ModelName);
 
             model = Instantiate(model);
             model.transform.parent = AugmentationObject.transform;
             model.transform.localPosition = new Vector3(mARData.PositionX, mARData.PositionY, mARData.PositionZ);
             model.transform.localRotation = Quaternion.Euler(mARData.RotationX, mARData.RotationY, mARData.RotationZ);
             model.transform.localScale = new Vector3(mARData.ScaleX, mARData.ScaleY, mARData.ScaleZ);
 
             model.name = mARData.ModelName;
 
             www.assetBundle.Unload(false);
             mIsLoadingModel = false;

Any help/links would be greatly appreciated!