General Electric Co. is quietly cutting off lending to gun shops, as the company rethinks its relationship to firearms amid the fallout from the school shooting in Newtown, Conn.

This month, Glenn Duncan, owner of Duncan's Outdoor Store in Bay City, Mich., said he received a letter from GE Capital Retail Bank in which the lender said it had made "the difficult decision" to stop providing financing services to his store. Other gun dealers have received similar notices.

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