Abstract: The tool and method for preparing for insertion into an eye an intraocular lens formed of a compressible material includes an elongated hollow chamber with an inlet end and an outlet end. An intraocular lens formed of a compressible material is extruded to a smaller size that fits in the elongated chamber by a compresser which includes an outlet adapted to be aligned with the inlet end of the elongated chamber. The extruded intraocular lens is pushed through the elongated chamber from the inlet end through to the outlet end.

Abstract: A replaceable barrel which screws into a threaded aperture in the frame of a handgun in the form of a single action revolver is properly positioned with respect to the front sight thereon and rigidly secured to the frame by an arrangement which utilizes the base pin for the cylinder and which includes a lug formed on the outside of the barrel adjacent the frame. The cylinder base pin couples to the lug to provide the barrel with the proper angular position relative to the frame and to index the lug and included barrel relative to the frame to compensate for any play therebetween. In a first arrangement for securing the cylinder base pin to the lug a set screw having a threaded exterior is screwed into a threaded aperture in the lug so as to force a conical shaped end thereof within an aperture for the base pin in the frame while at the same time receiving a necked-down front end of the cylinder base pin within a hollow interior thereof.