A surgical stapling device comprising: a body portion including a housing, a base member supported by the housing, and a drive assembly supported within the housing, the base member defining a longitudinal slot and spaced keyways, the drive assembly including a proximal portion having a connector and a distal portion including a working end, the drive assembly being movable within the housing between a retracted position in which the working end of the drive assembly is positioned within the longitudinal slot of the base member and an advanced position; and a tool assembly including a first jaw, a second jaw, and a mounting member, the first jaw and the second jaw being secured to the mounting member such that the first jaw is movable in relation to the second jaw between an open position and an unclamped position, the mounting member defining a channel having an open end that is dimensioned to receive the base member of the body portion, the mounting member including locking tabs, each of the locking tabs being configured to be received within one of the spaced keyways of the base member to releasably secure the tool assembly to the body portion, wherein each of the spaced keyways includes an axial portion and a transverse portion and axial movement of the tool assembly in relation to the body portion moves the locking tabs through the axial portions of the keyways and rotatable movement of the tool assembly in relation to the body portion moves the locking tabs through the radial portions of the spaced keyways to secure the tool assembly to the body portion, and wherein the housing includes a distal portion, the base member being pivotally supported on the distal portion of the housing characterised by the body portion including a platform that is supported on the distal portion of the housing, the base member defining a transverse slot and the platform including a flange that is pivotably received within the transverse slot of the base member, the platform defining upper and lower recesses that diverge outwardly in a distal direction. a body portion including a housing, a base member supported by the housing, and a drive assembly supported within the housing, the base member defining a longitudinal slot and spaced keyways, the drive assembly including a proximal portion having a connector and a distal portion including a working end, the drive assembly being movable within the housing between a retracted position in which the working end of the drive assembly is positioned within the longitudinal slot of the base member and an advanced position; and a tool assembly including a first jaw, a second jaw, and a mounting member, the first jaw and the second jaw being secured to the mounting member such that the first jaw is movable in relation to the second jaw between an open position and an unclamped position, the mounting member defining a channel having an open end that is dimensioned to receive the base member of the body portion, the mounting member including locking tabs, each of the locking tabs being configured to be received within one of the spaced keyways of the base member to releasably secure the tool assembly to the body portion, wherein each of the spaced keyways includes an axial portion and a transverse portion and axial movement of the tool assembly in relation to the body portion moves the locking tabs through the axial portions of the keyways and rotatable movement of the tool assembly in relation to the body portion moves the locking tabs through the radial portions of the spaced keyways to secure the tool assembly to the body portion, and wherein the housing includes a distal portion, the base member being pivotally supported on the distal portion of the housing characterised by the body portion including a platform that is supported on the distal portion of the housing, the base member defining a transverse slot and the platform including a flange that is pivotably received within the transverse slot of the base member, the platform defining upper and lower recesses that diverge outwardly in a distal direction.