A surgical tack applier comprising: a handle assembly comprising: an actuation assembly including: a motor; an actuation rod having a first end operatively coupled to an output shaft of the motor for concomitant rotation therewith; and an actuation switch configured to actuate the motor; an articulation lever assembly including: an articulation rod defining a lumen therethrough, the actuation rod extending through the articulation rod within said lumen; and an articulation lever operatively coupled with the articulation rod; and an elongate member extending distally from the handle assembly (200, the elongate member including a loading unit having a plurality of surgical tacks, and an articulation portion configured to pivot with respect to a longitudinal axis defined by the elongate member, wherein the articulation rod is operatively coupled with the articulation portion of the elongate member such that axial displacement of the articulation rod causes articulation of the articulation portion, and a second end of the actuation rod operatively coupled to the loading unit such that rotation of the actuation rod ejects a surgical tack from the loading unit, characterized in that the articulation rod defines a transverse bore and the articulation lever assembly further comprises a drive pin received in the transverse bore and coupled with the articulation lever, the drive pin defining a bore therein in which the actuation rod is received. a handle assembly comprising: an actuation assembly including: a motor; an actuation rod having a first end operatively coupled to an output shaft of the motor for concomitant rotation therewith; and an actuation switch configured to actuate the motor; an articulation lever assembly including: an articulation rod defining a lumen therethrough, the actuation rod extending through the articulation rod within said lumen; and an articulation lever operatively coupled with the articulation rod; and an actuation assembly including: a motor; an actuation rod having a first end operatively coupled to an output shaft of the motor for concomitant rotation therewith; and an actuation switch configured to actuate the motor; a motor; an actuation rod having a first end operatively coupled to an output shaft of the motor for concomitant rotation therewith; and an actuation switch configured to actuate the motor; an articulation lever assembly including: an articulation rod defining a lumen therethrough, the actuation rod extending through the articulation rod within said lumen; and an articulation lever operatively coupled with the articulation rod; and an articulation rod defining a lumen therethrough, the actuation rod extending through the articulation rod within said lumen; and an articulation lever operatively coupled with the articulation rod; and an elongate member extending distally from the handle assembly (200, the elongate member including a loading unit having a plurality of surgical tacks, and an articulation portion configured to pivot with respect to a longitudinal axis defined by the elongate member, wherein the articulation rod is operatively coupled with the articulation portion of the elongate member such that axial displacement of the articulation rod causes articulation of the articulation portion, and a second end of the actuation rod operatively coupled to the loading unit such that rotation of the actuation rod ejects a surgical tack from the loading unit, characterized in that the articulation rod defines a transverse bore and the articulation lever assembly further comprises a drive pin received in the transverse bore and coupled with the articulation lever, the drive pin defining a bore therein in which the actuation rod is received.