GLOCK Rear Fixed Sight 6.1mm Slim for G42/G43 Models

If you're running a GLOCK G42 or G43, the factory polymer sights work fine for most shooters—but a quality aftermarket rear sight can noticeably improve your speed and accuracy, especially in lower light. The GLOCK Rear Fixed Sight 6.1mm Slim is engineered specifically for these slim-profile compact models, giving you a drop-in upgrade that's purpose-built rather than a compromise fit. The slim 6.1mm profile matches the proportions of these concealable pistols without adding bulk to an already svelte package.

What sets this sight apart is the white contrast insert, a proven design feature that lets your eyes find the sight picture faster—whether you're at the range, in defensive training, or out hunting. White steel sights stand out against most target backgrounds and backstops, making sight acquisition instinctive when speed matters. The fixed design means no adjustment knobs or springs to fuss with; it's solid, reliable, and works right out of the box.

GLOCK's polymer construction keeps weight minimal and durability high. If you've been thinking about fresher sights on your G42 or G43, this is the straightforward option that gives you better visibility without reinventing the wheel.

Key Features

• White contrast insert for fast, instinctive sight acquisition
• Engineered for GLOCK G42 and G43 slim-frame models
• Fixed design—no adjustments needed
• Lightweight polymer construction

Specifications

Frequently Asked Questions

Will this rear sight fit my GLOCK G42 or G43?

Yes—this sight is engineered specifically for GLOCK G42 and G43 models. The 6.1mm slim profile is the right size for these compact handguns.

What's the white insert on the rear sight for?

The white contrast insert helps your eye locate and track the sight picture quickly, especially in dim light or fast-paced shooting. It's a time-proven feature that boosts speed without sacrificing accuracy.

Is this a fixed or adjustable sight?

This is a fixed sight—no windage or elevation adjustments. It installs and works as-is, which means straightforward reliability with no moving parts to wear out.