A powered fastener driver comprising: a housing; a nosepiece coupled to the housing and extending therefrom; a driver blade movable within the nosepiece between a ready position and a driven position; a canister magazine coupled to the nosepiece in which collated fasteners are receivable; a lifting mechanism operable to move the driver blade from the driven position toward the ready position; a pusher mechanism coupled to the nosepiece for individually transferring collated fasteners in the canister magazine to a driver channel in the nosepiece in which the driver blade is movable, characterised in that the pusher mechanism further including a body coupled to the nosepiece for relative translation therewith, a feeder arm coupled to the body for movement therewith, and a lever pivotably coupled to the nosepiece about a pivot axis, the lever having a first end engageable with the body for imparting reciprocating translation to the body relative to the nosepiece in response to pivoting movement of the lever in opposite directions about the pivot axis; a cam with which a second end of the lever is engaged for imparting pivoting movement to the lever; and a gear train for providing torque to the lifting mechanism, causing the lifting mechanism to rotate, wherein the cam also receives torque from the gear train, causing the cam to rotate in unison with the lifting mechanism; wherein the feeder arm is engageable with individual fasteners in the nosepiece for sequentially pushing the fasteners into the driver channel in response to reciprocation of the body relative to the nosepiece. a housing; a nosepiece coupled to the housing and extending therefrom; a driver blade movable within the nosepiece between a ready position and a driven position; a canister magazine coupled to the nosepiece in which collated fasteners are receivable; a lifting mechanism operable to move the driver blade from the driven position toward the ready position; a pusher mechanism coupled to the nosepiece for individually transferring collated fasteners in the canister magazine to a driver channel in the nosepiece in which the driver blade is movable, characterised in that the pusher mechanism further including a body coupled to the nosepiece for relative translation therewith, a feeder arm coupled to the body for movement therewith, and a lever pivotably coupled to the nosepiece about a pivot axis, the lever having a first end engageable with the body for imparting reciprocating translation to the body relative to the nosepiece in response to pivoting movement of the lever in opposite directions about the pivot axis; a body coupled to the nosepiece for relative translation therewith, a feeder arm coupled to the body for movement therewith, and a lever pivotably coupled to the nosepiece about a pivot axis, the lever having a first end engageable with the body for imparting reciprocating translation to the body relative to the nosepiece in response to pivoting movement of the lever in opposite directions about the pivot axis; a cam with which a second end of the lever is engaged for imparting pivoting movement to the lever; and a gear train for providing torque to the lifting mechanism, causing the lifting mechanism to rotate, wherein the cam also receives torque from the gear train, causing the cam to rotate in unison with the lifting mechanism; wherein the feeder arm is engageable with individual fasteners in the nosepiece for sequentially pushing the fasteners into the driver channel in response to reciprocation of the body relative to the nosepiece.