Sumo - 30mm Ring Sets (25pk) Cyclone Delta Stryker 1-10x28 FFP -

Delta Stryker 1-10x28 FFP - SDOG-1 Rifle Scope

These two plunger

allowing clearer target visibility under heat shimmer conditions

The lens then has the optimal adjustment i

A multi lens optical system using a highly refractive type of glass makes it possible to correct spherical defective vision without having any optical magnification

Sumo - 30mm Ring Sets (25pk) Cyclone Delta Stryker 1-10x28 FFP -30mm Rings set of 25 Laser cut stainless steel rings 3. 0mm to 7. 8mm in 0. 2mm increments (even numbers) choose 1mm, 2mm or 3mm annulus The annulus is the thickness of the inner ring you locate around the aiming mark. Many shooters obtain an optimum sight picture by changing annulus thicknesses at varying ranges.