C&H Precision Backup Iron Sights for Glock MOS and Trijicon SRO – Built for Performance
Not Yet Rated | Write the First Review SKU: 222-C&H-BUIS-GL-DPP-430TF-440BR
UPC: 616943732702
MFG#: BUIS-GL-DPP-430TF-440BR

C&H Precision Backup Iron Sights for Glock MOS and Trijicon SRO – Built for Performance

If you're running a Trijicon SRO on a Glock MOS or direct-milled slide, you know how important visibility and backup aiming are. Our BUIS (Back Up Iron Sights) are purpose-built to provide a reliable co-witness option without dominating your sight picture.

These aren’t just generic suppressor-height sights — they’re precision-matched to work with Trijicon SRO optics mounted on Glock MOS platforms and direct milled slides using CHPWS mounting solutions.

⚙️ Designed for Lower-Third Co-Witness

We engineered these sights for shooters who want functionality without distraction. With a lower-third co-witness setup, the iron sights sit low in the optic’s window, so they’re there when you need them — but out of the way when you don’t.

You’ll retain full optic field of view while maintaining a usable point of aim in case of battery failure or red dot obstruction.

📐 Sight Specs

• Front Sight: 0.430" Tall / 0.130" Wide – Tritium dot with yellow outline

• Rear Sight: 0.440" Tall / 0.150" Notch – Blacked out for minimal visual clutter

• Co-Witness Height: Lower third (~1/6–1/8 into optic FOV)

• Finish: Black nitride

• Mount Compatibility: Glock MOS with CHPWS V5 plate or direct milled slides

🔧 Compatible Platforms

These sights are designed to work specifically with:

• Glock models: 17, 19, 23, 34, 45, 47, and more

• Trijicon SRO optics mounted on Glock MOS or direct-milled slides

• Any slide using CHPWS optic plates or direct-cut for Trijicon footprint

🚀 Why Choose These BUIS for Your SRO Setup?

• True lower-third co-witness — optimized for Trijicon SRO

• Fast sight acquisition with minimal optic obstruction

• Night sight front / blacked-out rear for ideal contrast

• Purpose-built for Glock pistols — not a one-size-fits-all solution

• Trusted by LE, military, and civilian concealed carriers

These sights are for serious shooters who need their iron sights to be just as dependable as their red dot — without sacrificing speed or sight picture.

📦 What’s Included

• 1 Tritium front sight

• 1 Blacked-out rear sight

• Mounting screws (compatible with Glock slide dovetails)

• Installation instructions

🧠 FAQ – Backup Iron Sights for Trijicon SRO

Q: Will these BUIS co-witness with a Trijicon SRO on a Glock MOS?
A: Yes — they are specifically designed for lower-third co-witness with Trijicon SRO optics mounted on Glock MOS or direct milled slides using CHPWS optic plates.

Q: Can I use these with other red dots like Holosun or RMR?
A: While they're optimized for SRO, they may also provide a usable co-witness with red dots that share the Trijicon RMR footprint, such as Holosun 507C or RMR.

Q: Will these block my optic view?
A: No. These are low-witness sights, meaning they sit just low enough to stay out of the way, yet are still fully usable in case your red dot fails.

Q: Do I need a special mounting plate?
A: If you’re using a Glock MOS, you should use the CHPWS Version 5 plate for proper optic height alignment. Direct-milled slides that match Trijicon's footprint will also work.

Q: Are these night sights?
A: Yes. The front sight has a tritium insert with a yellow ring for high-contrast visibility in low light. The rear sight is blacked out for a clean sight picture.