Best Red Dots for Glock 19 in 2025
The Glock 19 MOS accepts most popular red dots. we reviewed dozens to find the best options for duty, carry, competition, and budget builds.
Top Glock 19 Red Dot Picks
Trijicon RMR Type 2
Battle-proven reliability, excellent battery life, adjustable LED
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Holosun 507C X2
Solar backup, shake awake, multiple reticles, great price
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Sig Romeo1 Pro
Steel housing, excellent sight picture, low profile
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Holosun 508T X2
Titanium housing, enclosed emitter, tough as nails
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Aimpoint Acro P-2
Best optic made, fully enclosed, bomb-proof
What to Consider
Battery Life: Trijicon RMR: 4+ years. Holosun with solar: essentially unlimited. Sig Romeo1 Pro: 20,000+ hours.
Window Size: All picks offer clear sight pictures suitable for defensive and competition use.
Mounting: Glock 19 MOS uses adapter plates. Some optics (RMR, 507C) need plates included with MOS system. Others may require aftermarket plates.
Installation Tips
- Use blue Loctite on mounting screws
- Torque to manufacturer specs (typically 12-18 in-lbs)
- Zero at 15 yards for defensive use, 25 yards for competition
- Suppressor-height sights recommended for co-witness
Our Recommendation
For most Glock 19 owners, the Holosun 507C X2 offers the best combination of features and value. It has everything you need—solar backup, shake awake, multiple reticles, and proven reliability—at half the price of an RMR.
If you're military, law enforcement, or need absolute confidence in extreme conditions, get the Trijicon RMR Type 2. It's the most proven pistol red dot in existence.
For more Glock content, see our Glock 19 Gen 5 Review and Best Holsters for Glock 19.
Quick Pick Guide
- Best Overall: Trijicon RMR Type 2
- Best Value: Holosun 507C X2
- Best Carry: Sig Romeo1 Pro
- Most Durable: Holosun 508T X2
- Premium Choice: Aimpoint Acro P-2