Gehmann Front Iris 2.9-4.9mm Fits 529
Gehmann Front Iris 2.9-4.9mm Fits 529, Gehmann Front Iris 2 9-4 9mm Fits 529 Gehmann Iris Adjustable 2 9-4 9mm Made for number 529 large bore tunnel sights Iris is infinitely adjustable within its range of 2 9-4 9mm Thread 1 1/4x 28