ProMag Industries SIG-A9 Magazine delivers unparalleled reliability with a robust, 32-round capacity designed for your firearm needs. Constructed from rugged steel and precision-engineered components, this magazine ensures optimal performance and durability under heavy use. 32 - Round Capacity Steel Construction Heat-Treated Chrome Silicon Wire Spring Manufactured & Assembled in the U.S.A. Easy Loading Rugged Construction Invest in the ProMag SIG-A9 Magazine for reliable operation backed by a lifetime warranty.