A surgical instrument, comprising: a shaft defining a longitudinal axis therethrough and having an end effector assembly disposed at a distal end thereof, the shaft including first and second shaft sections (517, 518) that are releasably engageable with one another; a drive sleeve disposed within the shaft and longitudinally translatable relative to the shaft to transition the end effector assembly between a first state and a second state, the drive sleeve including first and second drive sleeve sections (567, 568) that are releasably engageable with one another; and a coupling mechanism including: at least one shaft cantilever spring (520, 530), the shaft cantilever spring configured to engage the first shaft component at a first end thereof and configured to engage the second shaft section at a second end thereof to releasably engage the first and second shaft sections to one another; and characterised by at least one drive sleeve cantilever spring (570, 580) coupled to the at least one shaft cantilever spring (520, 530), the drive sleeve cantilever spring configured to engage the first drive sleeve section at a first end thereof and configured to engage the second drive sleeve section at a second end thereof to releasably engage the first and second drive sleeve sections to one another, wherein the shaft cantilever spring includes a first tab (524, 534) disposed at the first end thereof and extending therefrom and a second tab (526, 536) disposed at the second end thereof and extending thereform, the first tab and second tabs configured to bias into engagement within apertures (542, 544, 546, 548) defined within the first and second shaft sections, respectively, to engage the first and second shaft sections to one another. a shaft defining a longitudinal axis therethrough and having an end effector assembly disposed at a distal end thereof, the shaft including first and second shaft sections (517, 518) that are releasably engageable with one another; a drive sleeve disposed within the shaft and longitudinally translatable relative to the shaft to transition the end effector assembly between a first state and a second state, the drive sleeve including first and second drive sleeve sections (567, 568) that are releasably engageable with one another; and a coupling mechanism including: at least one shaft cantilever spring (520, 530), the shaft cantilever spring configured to engage the first shaft component at a first end thereof and configured to engage the second shaft section at a second end thereof to releasably engage the first and second shaft sections to one another; and characterised by at least one drive sleeve cantilever spring (570, 580) coupled to the at least one shaft cantilever spring (520, 530), the drive sleeve cantilever spring configured to engage the first drive sleeve section at a first end thereof and configured to engage the second drive sleeve section at a second end thereof to releasably engage the first and second drive sleeve sections to one another, wherein the shaft cantilever spring includes a first tab (524, 534) disposed at the first end thereof and extending therefrom and a second tab (526, 536) disposed at the second end thereof and extending thereform, the first tab and second tabs configured to bias into engagement within apertures (542, 544, 546, 548) defined within the first and second shaft sections, respectively, to engage the first and second shaft sections to one another. at least one shaft cantilever spring (520, 530), the shaft cantilever spring configured to engage the first shaft component at a first end thereof and configured to engage the second shaft section at a second end thereof to releasably engage the first and second shaft sections to one another; and characterised by at least one drive sleeve cantilever spring (570, 580) coupled to the at least one shaft cantilever spring (520, 530), the drive sleeve cantilever spring configured to engage the first drive sleeve section at a first end thereof and configured to engage the second drive sleeve section at a second end thereof to releasably engage the first and second drive sleeve sections to one another, wherein the shaft cantilever spring includes a first tab (524, 534) disposed at the first end thereof and extending therefrom and a second tab (526, 536) disposed at the second end thereof and extending thereform, the first tab and second tabs configured to bias into engagement within apertures (542, 544, 546, 548) defined within the first and second shaft sections, respectively, to engage the first and second shaft sections to one another.