Employees at Sabre Defence Industries, a firearm manufacturer in Nashville, Tennessee, are used to working under pressure. In addition to tight production deadlines, the company has to contend with the fact that its largest customer can reject an entire production lot based on one out-of-spec feature in a single part. That's why the ISO 9001-2008-registered shop has implemented an especially demanding quality process to ensure that all products are produced to the most stringent specifications. Key to these efforts are borescopes from Gradient Lens Corporation (Rochester, New York) that provide the only reliable means to visually inspect the insides of rifle barrels.
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