I have an M&P Shield 9mm. I think it is difficult (a) to see how many rounds are inside the magazine (yes, when it's outside the pistol), and (b) it is difficult to load the magazine by hand (I prefer not to purchase a speedloader). I would like to find a replacement 9mm magazine that is either transparent or has a big slot down the side like the Smith & Wesson 380 easy mag you see in this video: youtube.com/watch?v=AEKPz9MeM7k The 380 mag has a highly visible vertical slot and it also has a thumb tab on the side to pull the spring down and make loading easy. I checked the manufacturer's website for a replacement 9mm magazine with features like the 380 mag, nothing listed. My question to this forum is whether anyone has come across an aftermarket company providing magazines like this. Thanks in advance for your input.