GLOCK BBL 20 10MM 6"
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This is the factory Glock 10mm barrel that is extended in the Glock model 20 and 20SF. It can also be used to convert the 20C to shoot as a non-compensated. Using it to convert the 21 or 21SF to shoot 10mm is not recommended and unsafe as it is not a 100% fit. This barrel will not work extended in the 29 or 29SF due to the difference in the locking blocks.