Upgrade your AR-15 platform with the Guntec AR-15 Mag Catch Assembly With Extended Mag Button, a precision-engineered lower parts kit designed for faster, more reliable magazine changes. This complete assembly replaces the factory magazine catch components with a durable steel catch and spring paired with an oversized 6061 aluminum button, delivering improved ergonomics for competitive shooters, tactical operators, and range enthusiasts alike. Key Features Complete Drop-In Assembly - Includes steel magazine catch, stainless steel spring, and extended 6061 aluminum button for seamless installation without modifications. Extended Mag Button Design - Larger contact surface provides quicker activation, even when wearing gloves or under stress, reducing reload times and improving handling efficiency. Durable Construction - Steel catch and spring ensure long-term reliability and positive magazine retention, while the aluminum button offers lightweight strength with a corrosion-resistant anodized or nitride finish. Broad Compatibility - Fits standard mil-spec AR-15 and AR-308 lower receivers, supporting .223/5.56 and .308 calibers for versatile builds. USA-Made Quality - Manufactured to exacting standards for consistent performance and fit in tactical firearms accessories. Specifications Weight: 0.5 (as listed) Dimensions: 1.5" L x 0.8" W x 0.5" H Materials: Steel magazine catch and spring; 6061 aluminum extended button Finish: Black nitride or anodized options for enhanced durability and aesthetics Installation: Tool-free drop-in replacement for factory mag catch assembly