The tapered locking pins automatically compensate for wear because they are spring loaded. The fact that the lever is moved left slightly is witness to the fact that the pins are protruding farther into their holes in the monoblock as they and the holes wear. The axial thrust is taken by the shoulders of the monoblock where they seat in the frame cuts. On Beretta target guns and the SO series those shoulders are replaceable to compensate for wear. The action trunnions do not take any thrust if the gun is fitted properly. The fact that the locking surfaces are located far from the trunnions reduces the loads on them because of the increased length of the effective lever arm.
OB
