Surgical stapling apparatus with control features operable with one hand

A surgical stapling apparatus, comprising:

• a handle assembly including handle housing and a movable handle, the movable handle being movable relative to the handle housing through an actuation stroke;
• an actuation shaft supported at least in part within said handle housing and mounted to generate actuation motions in response to manipulation of said movable handle;
• a rotatable shroud movably coupled to said handle housing;
• an elongated body coupled to said rotatable shroud for rotational travel therewith about a longitudinal axis defined by said elongated body, said elongated body having a distal end configured to be operably attached to a disposable loading unit and a proximal end interfacing with said actuation shaft to transfer said actuation motions from said actuation shaft to said disposable loading unit;
• and
• a lockable rotation system for selectively locking said rotatable shroud to prevent rotation thereof about said longitudinal axis.