The prohibition did not eliminate assault weapons, but restricted their features, limiting magazine capacity to 10 rounds and regulating pistol grips, bayonet attachments and flash suppressors.

CNN: Marine to senator: 'No ma'am,' I won't register my guns

Gun-safety advocates may push to limit the sales of these rifles firearms that at least one major gun company admits drive youth interest and cut back on features like flash suppressors, telescoping stocks and pistol grips.

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