The SNAGGLETOOTHMF from Snaggletooth Tactical allows you to add a pocket opener (a wave) to almost any knife with thumb studs. The clever attachment replaces the thumb studs with a stud on one side and a hooked protrusion over the spine of the knife that is attached to the opposite side of the blade.
The addition of the SNAGGLETOOTHMF allows users to continue to thumb open the knife via the stud or deploy it as the knife is drawn from the pocket like any other waved knife. They also happen to be very affordable, especially when purchased in multipacks.
Learn more at SNAGGLETOOTHMF.com.