These proprietary Ranger Point peep sight apertures are an add-on product.
They work with the Ranger Point Round Aperture Spring (not the CloverLeaf fiber optic springs) that work in our Cloverlerleaf peep sights with the bases and integrated rails.
Available in three size apertures:
.060" - great for low light (dusk/dawn)
.095" - great for all day
.125" - bigger peep-sized opening
In the box: one aperture sight that screws into an RPP Round Aperture Spring.
Check out Marlin & Henry Rifle Peep Sights