A surgical stapler configured to receive a staple cartridge comprising staples, wherein each staple comprises a base and two legs extending from the base, said surgical stapler comprising: a handle, comprising: a trigger; and a firing assembly, wherein said trigger is configured to actuate said firing assembly; a shaft extending from said handle, wherein said shaft comprises a knife bar operably coupled with said firing assembly, wherein said knife bar comprises: a cam; and a cutting edge; and an end effector, comprising: a proximal end; a distal end; a support jaw, comprising: a support surface configured to support the staple cartridge, wherein said support surface defines a support plane; a plurality of stationary staple drivers; and a displacement guide defined along an axis transverse to said support plane; and an anvil jaw, comprising: a follower slidably received within said displacement guide; and an anvil surface configured to deform the staples, wherein said cam of said knife bar is configured to contact said anvil jaw and drive said anvil surface toward said support surface when said knife bar is moved from said proximal end toward said distal end of said end effector, and wherein each of the stationary staple drivers extends from a surface of the support jaw towards said anvil surface and provides a support that is stationary with respect to the support jaw for the base of a corresponding staple as the staple is being deformed by movement of the anvil surface; wherein said anvil jaw is displaceable between an open position, a closed position in which the staples have not been fully deformed, and a fired position in which the staples have been fully deformed, wherein said anvil jaw comprises a proximal cam surface and a distal cam surface (20062, 20038), wherein said cam is configured to contact said proximal cam surface to displace said anvil jaw between said open position and said closed position, and wherein said cam is configured to contact said distal cam surface (20062, 20038) to displace said anvil jaw between said closed position and said fired position. a handle, comprising: a trigger; and a firing assembly, wherein said trigger is configured to actuate said firing assembly; a trigger; and a firing assembly, wherein said trigger is configured to actuate said firing assembly; a shaft extending from said handle, wherein said shaft comprises a knife bar operably coupled with said firing assembly, wherein said knife bar comprises: a cam; and a cutting edge; and a cam; and a cutting edge; and an end effector, comprising: a proximal end; a distal end; a support jaw, comprising: a support surface configured to support the staple cartridge, wherein said support surface defines a support plane; a plurality of stationary staple drivers; and a displacement guide defined along an axis transverse to said support plane; and an anvil jaw, comprising: a follower slidably received within said displacement guide; and an anvil surface configured to deform the staples, wherein said cam of said knife bar is configured to contact said anvil jaw and drive said anvil surface toward said support surface when said knife bar is moved from said proximal end toward said distal end of said end effector, and wherein each of the stationary staple drivers extends from a surface of the support jaw towards said anvil surface and provides a support that is stationary with respect to the support jaw for the base of a corresponding staple as the staple is being deformed by movement of the anvil surface; a proximal end; a distal end; a support jaw, comprising: a support surface configured to support the staple cartridge, wherein said support surface defines a support plane; a plurality of stationary staple drivers; and a displacement guide defined along an axis transverse to said support plane; and a support surface configured to support the staple cartridge, wherein said support surface defines a support plane; a plurality of stationary staple drivers; and a displacement guide defined along an axis transverse to said support plane; and an anvil jaw, comprising: a follower slidably received within said displacement guide; and an anvil surface configured to deform the staples, a follower slidably received within said displacement guide; and an anvil surface configured to deform the staples, wherein said cam of said knife bar is configured to contact said anvil jaw and drive said anvil surface toward said support surface when said knife bar is moved from said proximal end toward said distal end of said end effector, and wherein each of the stationary staple drivers extends from a surface of the support jaw towards said anvil surface and provides a support that is stationary with respect to the support jaw for the base of a corresponding staple as the staple is being deformed by movement of the anvil surface; wherein said anvil jaw is displaceable between an open position, a closed position in which the staples have not been fully deformed, and a fired position in which the staples have been fully deformed, wherein said anvil jaw comprises a proximal cam surface and a distal cam surface (20062, 20038), wherein said cam is configured to contact said proximal cam surface to displace said anvil jaw between said open position and said closed position, and wherein said cam is configured to contact said distal cam surface (20062, 20038) to displace said anvil jaw between said closed position and said fired position.