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Glock MOS Sights – Upgrade Your Red Dot Ready Glock

Looking to improve accuracy, visibility, and speed with your Glock MOS pistol? You've come to the right place. At Mounts Plus, we specialize in high-performance Glock MOS sights — including fiber optics, tritium night sights, suppressor-height sights, and co-witness options — all built for today's optics-ready pistols.

Whether you're using a red dot like Trijicon RMR or Holosun 507C, or you're running irons only, we’ve got you covered with sights that deliver fast acquisition and rugged dependability.

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🔍 What Makes Glock MOS Sights Different?

The Glock Modular Optic System (MOS) slide allows you to mount a red dot optic directly to your pistol. But once the optic goes on, your standard factory sights usually don’t co-witness — they sit too low.

That’s where MOS-specific sights come in. These are built taller (also called “optic-height” or “suppressor-height”) so they align correctly with your red dot — or act as dependable backups if the optic fails.

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🛠 Types of Sights for Glock MOS

We offer the best Glock-compatible sight options from top brands like AmeriGlo, Trijicon, and XS Sights:

🔸 Suppressor Height / Optic Height Sights

• Designed for co-witnessing with red dot sights

• Available in lower-third or absolute co-witness setups

• Ideal for slide-mounted optics like SRO, RMR, 507C, and more

🔸 Tritium Night Sights

• Glow-in-the-dark inserts for 24/7 visibility

• Great for low-light or concealed carry use

• AmeriGlo, Trijicon HD XR, and XS DXT2 models available

🔸 Fiber Optic Sights

• Bright in daylight, ideal for competition and range use

• Faster front sight acquisition with minimal clutter

• Durable options for carry or sport shooting

🔸 Backup Iron Sights (BUIS)

• Designed to sit behind or around your optic

• Low profile — stays out of your red dot’s way

• Critical in case your battery dies or optic fogs up

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⚙️ Compatibility and Fitment

Our Glock MOS-compatible sights are designed for most 9mm, .40, and .45 ACP Glock models including:

• Glock 17, 19, 34, 45, 47, 26, and more

• Glock Gen 4 and Gen 5 MOS slides

• Direct-milled Glock slides or plates using Trijicon RMR footprint

Need help finding the right sight height for your optic? Reach out — our team knows how to match up sights and red dots so they work together.

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🛒 Why Buy Glock MOS Sights from Mounts Plus?

• Wide selection of optic-height, night, and fiber optic sights

• Trusted brands used by law enforcement and competitive shooters

• Fast, trackable shipping within the U.S.

• Expert support — real shooters who know the gear

Whether you’re upgrading for performance or building a duty-ready Glock, Mounts Plus has the sights to help you shoot better, faster, and with more confidence.

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✅ Frequently Asked Questions (FAQ)

Q: What height sights do I need for Glock MOS with a red dot?
A: Most Glock MOS setups with red dots require suppressor-height or optic-height sights. These typically fall in the 0.300" to 0.400" front sight range, depending on co-witness preference and optic mount.

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Q: Will my factory Glock sights work with a red dot?
A: No. Glock factory sights are too low to co-witness with most red dot optics. You’ll need taller sights designed for optic-ready pistols.

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Q: What’s the difference between absolute and lower-third co-witness?
A: Absolute co-witness aligns the iron sights in the center of your red dot window. Lower-third places them near the bottom, allowing a cleaner sight picture while still offering a usable backup.

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Q: Are these sights compatible with Trijicon RMR and Holosun optics?
A: Yes — all our optic-height Glock MOS sights are compatible with red dots that use the Trijicon RMR footprint, including Holosun 407C, 507C, and 508T.

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Q: Do you install Glock MOS sights?
A: We do not offer installation, but all sights on this page are compatible with standard Glock dovetails and can be installed by a gunsmith or with proper tools at home.

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