Here's the sought after knock video. Gonna be honest knock towards the middle it's more of a thud due to the absolute thickness of the product but it's definitely metal. Listen to the knock on the outer rim here. QUALITY! It's got the weight and heft of the Efx but the metal of the KA. Best of both worlds IMHO.
[video]https://vid1353.photobucket.com/albums/q663/toycrypt33/Mobile%20Uploads/20150327_140621_zpsyyfrmfio.mp4[/video]
[video]https://vid1353.photobucket.com/albums/q663/toycrypt33/Mobile%20Uploads/20150327_140621_zpsyyfrmfio.mp4[/video]