BSA Rearsight Assembly Screw Fitting.
Fits onto Barrel with a Screw.
Three Holes on Barrel for Sight to Fit into - 1x blind 1x threaded 6mm apart & one larger blind hole.
This spare fits the following models:
Airsporter Mk 6
Mercury
Meteor Mk 4
Mercury Mk 2
Scorpion Mk 1
