@s8n @j
Could any part of it handle the g-forces? But honestly, this is beyond if it would actually physically work or not. It's just a stupid and useless idea. The only reason things like this popped off in video games is because they're useful UI elements for games.
But IRL, you're just not gonna need this. If by the time your magazine runs out, you haven't dealt with the threat, then you're a lousy shot, and a bullet counter won't mitigate that.