Shield Sights SMS/RMS Low Profile Slide Mount for Glock 43

• Low-profile fit: This mount places a Shield SMS or RMS optic close to the Glock 43 slide, helping preserve a natural presentation and making the dot easier to pick up during fast defensive shooting.
• No slide cutting required: The rear-sight replacement design adds a red dot interface without permanent machining, making it a practical option for upgrading a standard Glock 43 slide.
• Shield RMS/SMS footprint: Built around the Shield mounting standard, it gives a direct fit for compatible mini red dot sights and avoids the extra height and complexity of larger adapter systems.
• Polymer construction with brass fixing wedge: The mount combines light weight with a secure installation method, keeping bulk down on a slim carry pistol while maintaining stable optic retention.
• Made for the Glock 43 platform: Its firearm-specific shape suits the dimensions of this sub-compact handgun, supporting a cleaner installation than universal mounting solutions.

About the Shield SMS/RMS Series

The Shield SMS/RMS series covers a broad family of mounting solutions built around Shield Mini Sight and Reflex Mini Sight optics. Within the range, Shield Sights offers mounts for pistol slides, firearm-specific adapters, and solutions for long-gun platforms, giving the footprint a consistent interface across different applications. That makes the series relevant not only to concealed-carry pistols, but also to sporting rifles, shotguns, and other firearms that benefit from compact red dot sights.

A defining characteristic of the series is its focus on low-profile mounting and on keeping the optic close to the host firearm wherever possible. The lineup includes dedicated slide plates, Picatinny and Weaver adapters, and scope-tube options for 30 mm and 34 mm mounts, so the same Shield footprint can be adapted to very different setups. In practice, that gives users a straightforward path to move within the Shield ecosystem while keeping the compact handling and fast target acquisition that mini red dot sights are chosen for.

About the Shield Sights SMS/RMS Low Profile Slide Mount for Glock 43

The Shield Sights SMS/RMS Low Profile Slide Mount for Glock 43 is a firearm-specific mounting solution for shooters who want to fit a compact red dot to a Glock 43 without slide machining. It replaces the rear sight position with a dedicated mounting plate, creating a practical route to add an optic to a slim carry pistol while keeping the installation compact and purpose-built. For everyday-carry and defensive handgun use, that matters because the pistol retains a cleaner profile than it would with taller, more universal adapter arrangements.

The key advantage of this model is its low-profile geometry. By positioning a compatible Shield optic as close to the slide as possible, it supports a more natural draw-to-dot transition and helps reduce the visual height of the sight over the bore. On a narrow-frame handgun such as the Glock 43, that lower mounting position also helps preserve the handling qualities that make the platform popular for discreet carry.

This mount uses the Shield RMS/SMS mounting standard, making it suitable for optics built around that footprint. Its polymer construction keeps weight down, which is especially useful on a lightweight sub-compact pistol where unnecessary mass can affect balance. Shield also uses a custom brass fixing wedge as part of the installation system, giving the mount a secure interface in the slide once the rear iron sight block is removed. The result is a compact red dot mounting solution designed around practical carry use rather than a one-size-fits-all adapter.

About Shield Sights

Shield International was formed in Great Britain in 1983, and the company has long focused on firearm sighting systems for military, law enforcement, and civilian users. Shield developed the Close Quarter Battlesight for the UK military and later introduced the civilian-oriented Close Quarter Sportsight in 2011, reflecting the company’s experience in adapting professional sighting concepts to sporting and defensive use.

Shield Sights is particularly known for its work in mini red dot sights. The company’s original mini red dot design dates to 1996, and that platform later appeared under names such as Firepoint, Tasco Optima, Trijicon RedDot, and JPoint. A notable part of Shield’s design approach is its patented Mini Sight mechanism, developed to allow co-witnessing with standard iron sights where the firearm and mount arrangement permit it. That background makes Shield especially relevant in the compact pistol optic category.

Main Features

• Manufacturer: Shield Sights
• Series: Shield SMS/RMS
• Made in: United Kingdom
• Mounting standard: Shield RMS/SMS
• Color: Black
• Material: Polymer
• Compatibility: Shield RMS Mounting Standard

Warranty

Shield Sights provides a 2-year warranty for this mount. That stated warranty period gives clear coverage terms for a key interface component in a pistol red dot setup.

In the Box

• 1 × GLOCK 43 polymer slide mount
• 1 × GLOCK 43 slide brass fixing wedge
• 1 × 2.5 mm Allen wrench
• 2 × M4 × 8 mm socket button head screws