Might have some good application in competition. In the real world, i'm skeptical. It seems a disadvantage to have an enemy know when one is out of ammo.
I may be full of it, but I thought German POWs reported they had no clue when Garands pinged their clips out. I mean, they were firing 8mm Mausers, after all, and being shot at with 30-06's; there's no way they heard anything
What the OP is describing is like a disposable en-bloc or Mannlicher clip, which only work well when it's dirt cheap to produce them. Components being expensive as they are, most shooters would cringe at another necessary cost (hence the howls of refusal in this thread
). I personally think a reliable plastic clip would be sweet for folks shooting factory ammo, seeing as it already comes in little plastic holders anyway. Especially hi-cap .22LR, which is a chore to load. Save your time/money on all those mags, and just buy some loaded strippers on the way to the range. Dispose of after use
The only way this concept has been pulled off in the past is with a cheap single-piece, stamped metal clip. Unfortunately, magazine designs require at least three parts to be removable, independent magazines. And that costs money.
Also, unlike tiny en-bloc and Mannlicher clips, modern magazines are large enough to be a tripping hazard in tight quarters. I'm not even a fan of manual drop-free systems for this reason. I'll never run a circuit with my Steyr M95 while it's pooping 6$ clips under my heels every five shots
Still, a good idea, and thinking outside the box is always encouraged by me. There was a time when "minimal controls" were in vogue so soldiers could be more easily trained. My Czech CZ52 and VZ58 have no slide/bolt release--you're meant to pull the handle/slide back to free it after reloading--very simple. Also slow. We've come to realize humans are good at doing multiple things at once with the right training, and the use of finger/thumb slide/mag releases is a reflection of that.
I had an idea back in the day for a top-mounted magazine a-la PS90 that would kick itself out
forward once empty so the shooter could at least see where it landed and avoid it. Such force would probably destroy even a metal mag body with time, though. I still thought it was better ergos than reaching under your armpit to load a bullpup, though.
TCB