Glock 31 .357 SIG 10rd Handgun Magazine, Black Polymer - 1649

Factory Glock handgun magazine chambered in .357 SIG with 10-round capacity for Glock Model 31 pistols. Features black polymer construction and genuine Glock reliability. Note: New Glock magazines may require a break-in period; loading with 9 rounds initially and allowing the spring to compress is recommended.