The Glock Factory OEM Poly 6.1 Fixed Rear Sight for Glock 42/43 delivers a durable, low-profile upgrade built to enhance reliability and quick target acquisition. This factory Glock rear sight, crafted from polymer, provides a consistent sight picture on compact pistols like the Glock 42 and Glock 43, helping shooters maintain accurate aiming during fast follow-up shots. Its fixed 6.1 height is designed to pair with standard front sights for a clean, unobtrusive sight plane, making it ideal for concealed carry, home defense, and duty use where simplicity and dependability matter. The precision geometry of the rear notch supports consistent alignment in various lighting conditions, while the polymer construction resists impact and wear, reducing maintenance needs and ensuring long-term performance. Installation is straightforward, allowing you to restore factory optics-ready performance without altering handling characteristics, so you can maintain the handguns factory feel and handling. This component is a practical upgrade for sustaining accurate shot placement and improving confidence in a compact Glock platform, whether on the range or in the field. WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.