An expandable spinal implant for insertion in a disc space between adjacent upper and lower vertebral bodies, the expandable spinal implant comprising: a body portion having a trailing end, a leading end, an upper surface for engaging an endplate of the upper vertebral body, a lower surface for engaging an endplate of the lower vertebral body, and ar interior cavity being configured to receive at least a portion of a carriage portion; the carriage portion having a first arm portion, a second arm portion, a collar portion spacing apart and attaching the first arm portion and the second arm portion to one another, head portions attached to the first arm portion and the second arm portion, and slots extending along the first arm portion and the second arm portion, portions of the first arm portion and the second arm portion being receivable within the interior cavity of the body portion, and the first arm portion and the second arm portion being moveable between a retracted position and an expanded position relative to the body portion, the collar portion including a threaded aperture extending therethrough, the head portions being configured to support portions of an expandable portion, and the slots being configured to receive a pin for attaching the portions of the expandable portion to the carriage portion; the expandable portion including an upper jaw portion and a lower jaw portion, the upper jaw portion and the lower jaw portion being attached to the head portions of the first arm portion and the second arm portion, the upper jaw portion and the lower jaw portion having apertures (134,136) therein for receiving the pin therethrough to attach the upper jaw portion and the lower jaw portion to the head portions of the first arm portion and the second arm portion; and a deployment portion including a deployment screw and a yoke portion engaging the deployment screw, at least a portion of the deployment screw being received in the threaded aperture of the collar portion, and the yoke portion including an aperture therein for receiving the pin therethrough to attach the yoke portion to the upper jaw portion, the lower jaw portion, and the head portions of the first arm portion and the second arm portion, the deployment screw being moveable between a first position and a second position via rotation thereof with respect to the threaded aperture of the collar portion, wherein rotational movement of the deployment screw serves to move the yoke portion and the pin received therethrough along the slots of the carriage portion, and movement of the pin in the slots serves to move the upper jaw portion and the lower jaw portion between a closed position and an open position. a body portion having a trailing end, a leading end, an upper surface for engaging an endplate of the upper vertebral body, a lower surface for engaging an endplate of the lower vertebral body, and ar interior cavity being configured to receive at least a portion of a carriage portion; the carriage portion having a first arm portion, a second arm portion, a collar portion spacing apart and attaching the first arm portion and the second arm portion to one another, head portions attached to the first arm portion and the second arm portion, and slots extending along the first arm portion and the second arm portion, portions of the first arm portion and the second arm portion being receivable within the interior cavity of the body portion, and the first arm portion and the second arm portion being moveable between a retracted position and an expanded position relative to the body portion, the collar portion including a threaded aperture extending therethrough, the head portions being configured to support portions of an expandable portion, and the slots being configured to receive a pin for attaching the portions of the expandable portion to the carriage portion; the expandable portion including an upper jaw portion and a lower jaw portion, the upper jaw portion and the lower jaw portion being attached to the head portions of the first arm portion and the second arm portion, the upper jaw portion and the lower jaw portion having apertures (134,136) therein for receiving the pin therethrough to attach the upper jaw portion and the lower jaw portion to the head portions of the first arm portion and the second arm portion; and a deployment portion including a deployment screw and a yoke portion engaging the deployment screw, at least a portion of the deployment screw being received in the threaded aperture of the collar portion, and the yoke portion including an aperture therein for receiving the pin therethrough to attach the yoke portion to the upper jaw portion, the lower jaw portion, and the head portions of the first arm portion and the second arm portion, the deployment screw being moveable between a first position and a second position via rotation thereof with respect to the threaded aperture of the collar portion, wherein rotational movement of the deployment screw serves to move the yoke portion and the pin received therethrough along the slots of the carriage portion, and movement of the pin in the slots serves to move the upper jaw portion and the lower jaw portion between a closed position and an open position.