Tough to find and not a lot of choices - MDT Polymer Detachable Box Magazine

I have a short action .223 Remington 700 mounted to a Magpul Hunter stock with the Magpul magwell kit installed. Currently, not even Magpul sells an AICS external box magazine in a .223/5.56 caliber (although they are supposed to be available summer 2021 sometime), so I'm not sure what other options are out there? Although these MDTs are a tad snug, they work well. No feed or jamming issues. You just have to make sure you give it a good pop on the bottom with the heel of your hand to make sure they are fully inserted. They also don't just drop out when you push the mag release button; you have to wiggle them out just a little. Some break-in may help, or perhaps a little smoothing and polishing. Overall, I'm happy with them.