A handle assembly for use with a surgical instrument is provided and includes a housing, a movable handle, a plunger, and a linkage. The movable handle is pivotably mounted to the housing. The plunger is disposed at least partially within the housing. Distal translation of the plunger relative to the housing is configured to affect a function of the surgical instrument. The linkage is disposed at least partially within the housing. A first portion of the first linkage is pivotable about the movable handle. A second portion of the first linkage is slidable relative to the plunger. A third portion of the linkage includes a stepped portion configured to selectively engage the plunger.