This is the RIGHT side ORIGINAL locking bolt Winchester 1892 lever action rifle. This part sits in grooves in the receiver on the right side (Loading gate (spring cover) side). The finger lever lifts the locking bolts up when cocked and locks the bolt to the receiver when in battery. The right side locking bolt is 5/16 inches higher than the left and has a slot milled in right above the locking bolt pin (565) to allow the Loading gate (spring cover) to pivot inward. The locking bolt pin is held in place by the locking bolt pin stop screw (783) Always keep these well lubricated. These are original parts