A lock linkage system for a landing gear system, the lock linkage system comprising: a lockable assembly comprising: an upper brace defining a longitudinal axis; a lower brace coupled to the upper brace; and a linkage coupled to the upper brace and the lower brace, the linkage being configured to allow movement of the upper brace and the lower brace relative to one another between unlocked and locked positions; a downlock actuator comprising: an electric motor coupled to the upper brace; a gearbox coupled to the electric motor; and a connecting output shaft having a first end and a second end, the first end coupled to a rotary output shaft of the gearbox, wherein the connecting output shaft is configured to rotate between a shaft locked position and a shaft unlocked position, wherein the gearbox is back-drivable in response to the connecting output shaft being in the shaft unlocked position, wherein back-drivable means that a load applied to said connecting output shaft by a link rod rotates the connecting output shaft, gears within the gearbox, and/or electric motor, wherein the downlock actuator is configured to toggle the linkage, the upper brace, and a lower brace between the unlocked and locked positions, and wherein the gearbox is fixedly coupled to the electric motor, the rotary output shaft is fixedly coupled to the gearbox, and the connecting output shaft is fixedly coupled to the rotary output shaft. a lockable assembly comprising: an upper brace defining a longitudinal axis; a lower brace coupled to the upper brace; and a linkage coupled to the upper brace and the lower brace, the linkage being configured to allow movement of the upper brace and the lower brace relative to one another between unlocked and locked positions; an upper brace defining a longitudinal axis; a lower brace coupled to the upper brace; and a linkage coupled to the upper brace and the lower brace, the linkage being configured to allow movement of the upper brace and the lower brace relative to one another between unlocked and locked positions; a downlock actuator comprising: an electric motor coupled to the upper brace; a gearbox coupled to the electric motor; and a connecting output shaft having a first end and a second end, the first end coupled to a rotary output shaft of the gearbox, wherein the connecting output shaft is configured to rotate between a shaft locked position and a shaft unlocked position, wherein the gearbox is back-drivable in response to the connecting output shaft being in the shaft unlocked position, wherein back-drivable means that a load applied to said connecting output shaft by a link rod rotates the connecting output shaft, gears within the gearbox, and/or electric motor, an electric motor coupled to the upper brace; a gearbox coupled to the electric motor; and a connecting output shaft having a first end and a second end, the first end coupled to a rotary output shaft of the gearbox, wherein the connecting output shaft is configured to rotate between a shaft locked position and a shaft unlocked position, wherein the gearbox is back-drivable in response to the connecting output shaft being in the shaft unlocked position, wherein back-drivable means that a load applied to said connecting output shaft by a link rod rotates the connecting output shaft, gears within the gearbox, and/or electric motor,