This unique part, designed by Wilson Combat engineers replaces the small and hard to reach factory P320 lo-profile slide catch levers. Stamped from high quality ordnance steel, the deeply grooved and extended Wilson Combat SIG P320 extended slide release is uniquely shaped to improve your reloads under stress without interfering with your grip. This part is precision stamped of ordnance steel and has a black nitride finish. It uses the factory installed slide release spring and post. Features: Compatible with all Generation of P320 models and variants in 9/357/40 calibers only Stamped from ordnance grade steel Black nitride finish Drop in fit .040" Wider than factory slide release