VEVOR Hard Pistol Case, Heavy Duty Hard Gun Case with XPE Foam Lining, Waterproof Pistol Storage Box with Customizable Interior & Handle for Gun, Lenses, Camera, Gear, TSA Compliant, 18.7x12.5x7.5 in

Good Evening World Now I have bought four of this manufactures gun cases three I returned, because of misinformation or descriptions were incorrect. Before I buy another one. What size those the magazines fit??????? I need them to be able to fit Double Stack Magazines. Does these fit double stack or single stack????