A surgical instrument, comprising: a handle comprising: a first handle member; and a second handle member pivotably attached to the first handle member, configured to pivot relative thereto; a body comprising: a tubular outer shaft removably attached to the first handle member; an inner rod extending through a longitudinal lumen of the outer shaft and removably attached to the second handle member in a manner permitting reciprocal longitudinal movement relative to the outer shaft; and an engagement mechanism configured to provide a releasable connection between the handle and the body, comprising: at least a first outer shaft aperture and a second outer shaft aperture, which are at least partially opposed to each other and are disposed through a proximal region of the outer shaft; a first retaining member permanently actuatably attached to the first handle member and biased into a releasable engagement with the at least a first outer shaft aperture; and a second retaining member permanently actuatably attached to the first handle member, at least partially opposed to the first retaining member, and biased into a releasable engagement with the at least a second outer shaft aperture; wherein the instrument is configured such that pivoting one of the first and second handle members (206, 204) relative to the other longitudinally moves the inner rod relative to the outer shaft. a handle comprising: a first handle member; and a second handle member pivotably attached to the first handle member, configured to pivot relative thereto; a first handle member; and a second handle member pivotably attached to the first handle member, configured to pivot relative thereto; a body comprising: a tubular outer shaft removably attached to the first handle member; an inner rod extending through a longitudinal lumen of the outer shaft and removably attached to the second handle member in a manner permitting reciprocal longitudinal movement relative to the outer shaft; and an engagement mechanism configured to provide a releasable connection between the handle and the body, comprising: at least a first outer shaft aperture and a second outer shaft aperture, which are at least partially opposed to each other and are disposed through a proximal region of the outer shaft; a first retaining member permanently actuatably attached to the first handle member and biased into a releasable engagement with the at least a first outer shaft aperture; and a second retaining member permanently actuatably attached to the first handle member, at least partially opposed to the first retaining member, and biased into a releasable engagement with the at least a second outer shaft aperture; wherein the instrument is configured such that pivoting one of the first and second handle members (206, 204) relative to the other longitudinally moves the inner rod relative to the outer shaft. at least a first outer shaft aperture and a second outer shaft aperture, which are at least partially opposed to each other and are disposed through a proximal region of the outer shaft; a first retaining member permanently actuatably attached to the first handle member and biased into a releasable engagement with the at least a first outer shaft aperture; and a second retaining member permanently actuatably attached to the first handle member, at least partially opposed to the first retaining member, and biased into a releasable engagement with the at least a second outer shaft aperture; wherein the instrument is configured such that pivoting one of the first and second handle members (206, 204) relative to the other longitudinally moves the inner rod relative to the outer shaft.