50 in the actuator arm end 29 to a lip 51 on the top handle half 42 near the handle rear end 30 an upraised end 19 of the clip 14 is normally in contact with the actuator arm 8 to force edges of the actuator arm 8 against an internal surface of the top handle half 42 the bottom handle half 43 is formed to provide the handle opening 28 and upper and lower grooved guide rails 52 and 53 projecting from the internal cavity wall 48 the upper guide rail 52 has a first detent 54 near the handle rear end 30 and a second detent 55 near the handle opening 28 the lower guide rail 53 has a detent 56 and a stop wall 57 near the handle opening 28 the leaf spring 38 has a v shaped end 58 which is in friction contact with the upper guide rail 52 the detents 54 and 55 in the upper guide rail 52 and the v shaped end 58 of the leaf spring 38 provide means for retaining the tubular member 13 in a desired position for example if the tubular member 13 is pushed rearwardly or fully compressed into the handle cavity 18 the v shaped end 58 of the leaf spring 38.