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Matthew, the Glock 23 Gen 3 with Threaded Barrel has a metric M14.5x1 left hand thread. You can certainly use a "Thread Adapter" to 1/2 x 28 to use more common muzzle devices.

metric M14.5x1 left hand thread

Hi Matthew, the Threaded Barrel has a metric M14.5x1 left hand thread. You can use a "Thread Adapter" to 1/2 x 28 to use more common muzzle devices

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