Gehmann 579-I Lens Adaptor for Rearsight Irises Size:I A swing-out anti-cant level is

A swing-out anti-cant level is built in

it's a genuinely rugged

double-tapered jacket ensures adequate penetration with reliable expansion on medium game

keeping the liner seated firmly and reducing vibration that would otherwise walk point of impact between shots — an issue that matters acutely at longer pest-control or target distances

Gehmann 579-I Lens Adaptor for Rearsight Irises Size:I A swing-out anti-cant level isThe Gehmann 579 I is a small precision adaptor that lets you fit Gehmann's 579 cylindrical lens system onto a compatible rearsight iris, rather than buying a whole new iris unit. It is internally threaded to pick up your existing iris's own front thread, so the 579 lens locks straight onto the sight you already use. The 579 I variant is matched specifically to the 566, 566 R, 566 S, 567, 570, 570 R and PH570 irises check your iris model before