A quick word about why aperture sights are superior to other sighting systems.
With an aperture sight the shooter focuses on only the front sight and its alignment on the target. No need to “see” the rear sight. The shooters eye will automatically center the front sight in the round hole. Anything that draws attention to the aperture/hole/rear sight will detract from that magical alignment and require more work to achieve a proper sight picture. Fiber Optics, Brass Rings, Crosshairs, etc. all interfere with the human eye's natural ability to instantly center the front sight in the circle.
Apertures also perform a "Sharpening" function for focus and increased depth of field. This is why they are called the "magic sight for old eyes".
With a smaller aperture, the front sight and target are going to be crisper. With a larger aperture the eye will still automatically center the front but may not be quite as sharp.
No worries, that front sight is still there even if it is slightly fuzzy. Go with it. Think about it... What do all NRA Bullseye, International and Olympic competition shooters use? Precision machined steel apertures with crisp round holes.
Skinner Sights Apertures are precision machined from solid steel barstock.
No plastic, no aluminum, just rugged, precision, crisp steel.
Most Skinner Sights ship with a .096" (Standard) installed.
This is a good all-around aperture size for average conditions.
We recommend the .040 (fine) for target shooting in good light and the .125 (large) or .155 (X-Large) for dim light hunting. Remember, you can always remove the aperture completely for a .200" "Ghost Ring" effect. This is useful in very dim light and for up close encounters with dangerous game.
You can also order several different size apertures and use them interchangeably as light conditions require.