Germany’s MD-Textil has introduced a new line of firearms oriented products with the first being the Last Chance Cartridge Holder.
It accepts 2 cartridges in .308, 6.5 CM, 300 BLK, .30-06 or similar calibers and incorporates an Anti-slip coating to ensure your rounds won’t fall out. It is attached to the rifle via hook Velcro on the back. They include a patch of Velcro loop to affix to the stock.
md-textil.info/Lastchance-Patronenhalter