Glock 42/43 OEM Rear Night Sight

Slimline Glock Night Sight

This is Glock's own factory rear night sight for the slimline pistols, the Glock 42 and Glock 43. Two tritium vials sit in the rear blade, so you can line up your sights in dim light or full dark when a plain black sight disappears. It suits concealed carry and home defense owners who want to replace a plastic or damaged rear sight with the factory steel part.

Features

• Genuine Glock OEM Part — OEM means original equipment manufacturer: this is the rear sight Glock makes for its own pistols, marked with the Glock logo and listed under Glock part number 33578.
• Twin Tritium Vials — Two vials of tritium, a gas that glows without batteries or charging, light the rear dots in low light, with a rated service life of up to 12 years.
• Three-Dot Sight Picture — The two rear dots pair with a matching front night sight to give the familiar three-dot alignment, where you center the front dot between the rear pair.
• White Outline Rings — Each vial sits in a white ring that stays visible in daylight, so the dots work as a normal sight when the glow is washed out.
• Steel Body — The sight is machined steel in a black finish that Glock applies with its gas nitration process for surface hardness and corrosion resistance.
• Square-Notch Rear Blade — A flat-bottomed square notch frames the front post for a clear, even gap on either side.
• Sized For Slimline Slides — The narrow profile is cut for the single-stack G42 and G43 slides, and it also fits the G43X and G48.
• Plain Serrated-Free Rear Face — The rear face stays smooth around the dots, keeping the sight picture uncluttered.

Fit And Installation

This rear sight fits the Glock 42, 43, 43X and 48. It mounts in the slide's rear dovetail, the angled slot machined across the top of the slide, and like most dovetail sights it is normally fitted with a sight pusher tool or by a gunsmith. Only the rear sight is included, so pair it with a Glock front night sight if you want all three dots to glow.