This is a Kimber® EVO SP 9mm 8-round magazine.
Featuring durable steel construction with steel spring internals and a textured grip extension baseplate, these 8-round magazines offer enhanced capacity and a larger grip area for better handling. Kimber’s EVO SP is a radical innovation in 1911-inspired subcompact pistols; with full metal construction, striker-fired design, and tritium sights to offer maximum shooter-friendly precision and performance. Each Kimber magazine is proudly made in America and engineered to meet strict factory standards for performance and reliability. If you’re carrying your EVO SP pistol, don’t forget to keep a few spare magazines around and rotate your carry mags every 1-3 months to maximize service life and reliability.