I was given about nine a few years ago, some 20 rounders, some 30 rounders. (Later I found out why)
Half of them would not fit in my AR. A few were so tight it required 2 hands to remove. I am not too bad at home remedies, so I squuezed them GENTLY in a vice to assist with side clearance. The tac welds, or folds separated. The 2-3 that fit work fine. I kept the others for the springs or followers. I would not buy more and would rather spend my money on GI contractors. Have they in time improved? That I don't know.
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