An apparatus, the apparatus comprising: (a) a body assembly; (b) a shaft assembly comprising: (i) an outer sheath, and (ii) a driving mechanism slidably housed within the outer sheath, wherein the body assembly is configured to actuate the driving mechanism; (c) an end effector, wherein the end effector comprises: (i) a staple deck defining a plurality of staple openings housing a plurality of staples, wherein each staple opening in the plurality of staple openings houses a staple, wherein the staple deck is fixed to the shaft assembly, (ii) an anvil configured to deform the plurality of staples, (iii) a first staple driver coupled with the driving mechanism, wherein the first staple driver is configured to fire a first annular array of staples of the plurality of staples against the anvil to deform the first annular array of staples at a first compressed staple height, and (iv) a second staple driver coupled with the driving mechanism, wherein the second staple driver is configured to fire a second annular array of staples of the plurality of staples against the anvil to deform the second annular array of staples at a second compressed staple height, wherein the first compressed staple height and the second compressed staple height are different, characterized in that the driving mechanism is slidably housed within the outer sheath for linear reciprocating motion therein and operable to drive the second staple driver independently of the first staple driver in a sequence. (a) a body assembly; (b) a shaft assembly comprising: (i) an outer sheath, and (ii) a driving mechanism slidably housed within the outer sheath, wherein the body assembly is configured to actuate the driving mechanism; (i) an outer sheath, and (ii) a driving mechanism slidably housed within the outer sheath, wherein the body assembly is configured to actuate the driving mechanism; (c) an end effector, wherein the end effector comprises: (i) a staple deck defining a plurality of staple openings housing a plurality of staples, wherein each staple opening in the plurality of staple openings houses a staple, wherein the staple deck is fixed to the shaft assembly, (ii) an anvil configured to deform the plurality of staples, (iii) a first staple driver coupled with the driving mechanism, wherein the first staple driver is configured to fire a first annular array of staples of the plurality of staples against the anvil to deform the first annular array of staples at a first compressed staple height, and (iv) a second staple driver coupled with the driving mechanism, wherein the second staple driver is configured to fire a second annular array of staples of the plurality of staples against the anvil to deform the second annular array of staples at a second compressed staple height, wherein the first compressed staple height and the second compressed staple height are different, characterized in that the driving mechanism is slidably housed within the outer sheath for linear reciprocating motion therein and operable to drive the second staple driver independently of the first staple driver in a sequence. (i) a staple deck defining a plurality of staple openings housing a plurality of staples, wherein each staple opening in the plurality of staple openings houses a staple, wherein the staple deck is fixed to the shaft assembly, (ii) an anvil configured to deform the plurality of staples, (iii) a first staple driver coupled with the driving mechanism, wherein the first staple driver is configured to fire a first annular array of staples of the plurality of staples against the anvil to deform the first annular array of staples at a first compressed staple height, and (iv) a second staple driver coupled with the driving mechanism, wherein the second staple driver is configured to fire a second annular array of staples of the plurality of staples against the anvil to deform the second annular array of staples at a second compressed staple height, wherein the first compressed staple height and the second compressed staple height are different,