I've shot a lot of ARs with a lot of mags. I've never seen one jam. I don't think clips are superior to mags for defending a static position, they would only be superior in the one-in-a-trillion scenario I described. Yes, magazines cost more than clips. But unless you're super broke, they are worth the extra cost. I feel like a 30-round en-bloc clip would be much more unwieldy and fragile than a regular AR or AK mag.
When storing mass ammo, magazines don't cost more than clips, they cost more than the rifle.
You can get 24 AR-15 magazines for less than $300. My Del-Ton AR was $400 on sale. You don't need to have your entire ammo supply in clips or mags, there's no point.
You can get a whole M4 clone for less than $500 afaik, but I haven't checked recent prices. You're saying the empty magazines cost nearly as much as the rifle itself? You're also not suggesting testing the magazines beforehand, which isn't cheap either. Fully loaded & pre-tested, the ammo storage winds up costing more than the rifle in some cases. Surely there's a better way, and there is, but it's not "cool" in the gun community. It's not something promoted by known "experts", so I can expect the sort of response I get. Like I said in one of my comments, if Rambo had used a clip-fed, 50-round machine gun, there would be no debate unless I switched my argument and advocated for box magazines instead.
Cheap knockoff magazines can jam, meaning pre-loading 900 rounds of ammo cost about as much as another gun or several hundred additional loose rounds of ammo. It costs $300-600 worth of magazines, and that's without testing them with 30 rounds each. It's closer to $500-1000 just for magazines (alone) which have actually been loaded and test fired.
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