The 9mm Glock Conversion Block is a drop-in fit to give a 9mm capable lower without resorting to buying a pistol caliber-specific option. Designed to install in Mil-Spec lowers almost exactly like a standard rifle magazine.
Sylvan Arms GCB100 Magwell Conversion Block 9mm Fits Glock Black
Sylvan Arms GCB100 Magwell Conversion Block 9mm Fits Glock Black Steel/6061-T6 Aluminum
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Model | Glock Conversion Block |

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