Alexander Arms MEG654 AR-15 4rd 6.5 Grendel Black Steel
http://www.tandktactical.com/shop/819511020182-alexander-arms-meg654-ar-15-4rd-6-5-grendel-black-steel-20741
http://www.tandktactical.com/web/image/product.template/20741/image_1920?unique=461c8f0
4rd, 6.5 Grendel magazine is for Alexander Arms AR-15.
