X-Y adjustable unit to allow the attachment of an additional centering ring or Iris
Significant improvement of the aiming accuracy
Minimizes aiming errors
Allows the attachment of individual centering ring sizes or an centering iris
Individual adjustment of centering ring (iris) distance using stepless length shifts on the lens shade
Compatible with the centra-rear-sight "SPY" and in combination with Lens-Hood II also be used for all standard rear sight