Built specifically for use with compact/Officer 1911 pistols, the CMC® Products Range Pro® 1911 Compact 9mm 9-Round Stainless Steel Magazine has a sturdy, laser-welded stainless steel construction with detachable polymer baseplates for rock-solid dependability, superior strength, and long-lasting corrosion resistance. This aftermarket magazine has a steel anti-tilt follower and high-tensile piano wire spring for dependable feeding in tactical settings with high target and environmental stress. Additionally, numbered witness holes allow for quick and simple round counts while playing. The RANGE PRO magazines from CMC include premium magazine construction, impact-resistant polymer base pads, and clear numbered witness holes, making them ideal for competition shooting, range shooting, or everyday carry. These RANGE PRO magazines are some of the highest-quality, most adaptable 1911 magazines on the market right now, built on decades of experience. Chip McCormick guarantees that every magazine and accessory they produce will serve you faithfully for many years. For your 9mm 1911, get some COMPACT CMC RANGE PRO magazines right away!