An apparatus includes a first stapling
assembly, a plurality of staples a plurality of staple drivers, and a second stapling
assembly portion. The first stapling
assembly portion has a
deck surface defining a plurality of apertures. The staple drivers can drive the plurality of staples through the staple apertures of the
deck surface. The second stapling assembly can couple with the first stapling assembly portion. The second stapling assembly portion has a section that overlies the
deck surface. At least one of the first or second stapling assembly portions include a first support feature that inhibits deflection of the deck surface during stapling.