(FOX NEWS) The prospect of a renewed assault weapons ban in the wake of the Connecticut school massacre has set of a round of buying, as thousands of Americans head to their local gun store to secure the popular AR-15 — the model used by the school gunman — before potential government prohibitions on their purchase.

They are also buying the .223 ammunition used by the AR-15 and the type of high-capacity magazines covered under the last federal assault weapons ban, which Congress let expire without renewing.

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