Glock Factory Handgun Magazine Black for Glock Model 31 .357 Sig 10/rd Bulk

Overview

This factory-manufactured 10-round magazine is designed for use with the Glock Model 31 pistol chambered in .357 Sig. When new, these magazines may require a break-in period to accommodate the full capacity. It is recommended to load the magazine to one round less than capacity for several days to allow the spring to compress, or to cycle the magazine between full and empty multiple times to facilitate the break-in process.

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