The AmeriGlo 4L Sight Set (AmeriGlo part no. GL-456) is built to fit all Glock pistol models and is sized specifically for co-witnessing with a slide-mounted red dot optic. The set pairs a .280-inch front sight with a .355-inch rear sight, a height combination chosen so the irons line up through the optic’s window for a reliable backup sighting reference. AmeriGlo designs its sight sets for duty and defensive pistols where an optic failure or dead battery still needs a fast, usable set of irons underneath. It’s a straightforward upgrade for any Glock owner running a red dot who wants properly co-witnessed backup sights instead of factory irons sized for a bare slide.

Key Specifications

• Fits all Glock pistol models across the lineup.
• Front sight height is .280 inch, sized for optic co-witness.
• Rear sight height is .355 inch, matched to the front for a level sight picture through an optic window.
• Built as an optic-compatible sight set rather than a standard-height Glock sight.

Frequently Asked Questions

Will these sights work with a slide-mounted red dot? Yes, the .280 front and .355 rear heights are sized specifically for co-witness with a red dot optic.

Which Glock models does this set fit? AmeriGlo lists this 4L set as fitting all Glock models.

Buy the AmeriGlo 4L Optic-Compatible Sight Set for Glock

Get a properly co-witnessed backup sight picture under a red dot with this AmeriGlo 4L set. Browse our full gun sights selection and order from our Lubbock, Texas gun shop for fast, direct shipping.