Fusion Firearms premium magazine catch for Colt style 1911 pistols; all CNC machined from solid steel bar stock and heat treated. The button end is checkered. This one is standard Colt spec length and black oxide finished. These are the best it gets in a precision mag catch for your 1911 pistol; Will work on all 1911 style pistols and clones. These are professional gunsmithing parts made in the USA.