Holosun X2 vs X3 vs 407Comp vs 507Comp vs Ronin: Complete Comparison Guide (2026)

Choosing the right Holosun optic has become more challenging than ever with the introduction of the new X3 Series, the competition-focused Comp models, and the exclusive Ronin collaboration optics.

Whether you're building a concealed carry pistol, home defense handgun, duty weapon, or competition gun, understanding the differences between the X2, X3, 407Comp, 507Comp, and Ronin Series can help you make the right decision.

This guide breaks down the differences in window size, reticle options, technology, competition performance, and pricing to help you determine which optic best fits your needs.

---

Understanding the Holosun Popular Optic Lineup

X2 Series

The X2 Series has become one of the most trusted and widely used pistol optics available today.

Popular models include:

• 407C X2 - RMR Footprint

• 507C X2 - RMR Footprint

Key Features:

• Solar Failsafe

• Shake Awake Technology

• Side-mounted battery tray

• Long battery life

• Proven reliability

• Available in Dot Only and MRS versions

The X2 Series remains one of the best values in the red dot market.

---

X3 Series

The X3 Series represents Holosun's newest generation of open reflex optics.

Updates include:

• Improved auto-brightness functionality

• Enhanced lens coatings

• Updated electronics

• Refined housing design

• Available Gold Dot options on select models

The X3 Series builds upon the proven X2 platform while introducing improved performance and user experience.

---

Comp Series

The Comp Series was developed specifically for competitive shooting.

Models include:

• 407Comp

• 507Comp

Key Features:

• Oversized competition window

• Faster target transitions

• Improved recoil tracking

• Large sight picture

• RMR footprint compatibility

The Comp Series is designed for shooters who prioritize speed and performance.

---

Ronin Series

The Ronin Series is a collaboration between Holosun and Ronin Tactics.

Key Features:

• Same oversized competition window as the 507Comp

• Exclusive Ronin branding

• Simplified MRS reticle system

• Premium competition-oriented design

• Satin Black Anodized 

The Ronin combines competition-level performance with exclusive styling.

---

Window Size Comparison

One of the biggest differences between these optic families is the size of the viewing window.

X2 Window

The X2 utilizes a traditional carry-sized window that balances:

• Compact footprint

• Lightweight design

• Easy concealment

• Proven performance

Best For:

✔ Concealed Carry

✔ Duty Use

✔ Home Defense

---

X3 Window

The X3 offers a slightly enhanced viewing experience while maintaining a compact overall footprint.

Benefits include:

• Improved field of view

• Better peripheral awareness

• Faster dot acquisition

Best For:

✔ Everyday Carry

✔ Defensive Use

✔ Range Shooting

---

407Comp / 507Comp Window

The 407Comp and 507Comp share the exact same housing and window dimensions.

Window Dimensions:

• 1.1" Wide

• 0.87" Tall

Benefits:

• Faster target transitions

• Easier dot tracking during recoil

• Larger sight picture

• Improved competition performance

Best For:

✔ USPSA

✔ Steel Challenge

✔ PCC

✔ Competition Handguns

---

Ronin Window

The Ronin utilizes the same oversized housing and window as the 507Comp.

Benefits include:

• Maximum visibility

• Fast sight acquisition

• Excellent recoil tracking

• Competition-level performance

---

Reticle Options: Understanding 407 vs 507 Models

One of the most common misconceptions is that all X2 and X3 optics use the same reticle system.

In reality, Holosun typically offers two versions within each series.

---

407 Models (Dot Only)

Examples:

• 407C X2

• 407C X3

Reticle:

• Dot Only

Benefits:

✔ Simpler operation

✔ Lower cost

✔ Cleaner sight picture

✔ Excellent battery efficiency

---

507 Models (MRS)

Examples:

• 507C X2

• 507K X2

• 507C X3

• 507K X3

Reticle Options:

• 2 MOA Dot

• 32 MOA Circle

• Circle-Dot Combination

Benefits:

✔ Greater versatility

✔ Multiple reticle choices

✔ Popular for carry and competition

✔ Ability to customize sight picture

---

407Comp Reticle

The 407Comp uses the exact same housing and oversized competition window as the 507Comp.

However, it utilizes a simplified reticle system.

Reticle:

6 MOA Dot Only

Benefits of a 6 MOA Dot:

• Faster target acquisition

• Easier recoil tracking

• Cleaner sight picture

• Excellent daylight visibility

Many USPSA and Steel Challenge shooters actually prefer a large dot-only optic because it minimizes distractions and maximizes speed.

---

507Comp Performance Reticle System (PRS)

The 507Comp expands reticle customization significantly.

Available Reticles:

• 2 MOA Dot

• 8 MOA Circle

• 20 MOA Circle

• 32 MOA Circle

• Circle-Dot Combinations

The Performance Reticle System (PRS) allows shooters to tailor their reticle for specific disciplines and personal preferences.

This is one of the primary reasons the 507Comp has become one of the most popular competition optics available today.

---

Ronin Multi-Reticle System

The Ronin uses a simplified version of Holosun's Multi-Reticle System.

Available Reticles:

• 2 MOA Dot

• 32 MOA Circle

• Circle-Dot Combination

Unlike the 507Comp, the Ronin does not offer the additional 8 MOA and 20 MOA circle options.

This creates a simpler and more streamlined user experience.

---

Price Comparison

Price is often one of the biggest deciding factors when choosing an optic.

Starting Price Comparison (Red Reticle Models)

Model	Starting Price
X2 Series	$185.99
X3 Series	$239.99
407Comp	$279.99
507Comp MRS	$394.99
507 Ronin MRS	$394.99

---

X2 – Best Budget Value

Starting at $185.99, the X2 remains one of the best values in the Holosun lineup.

You get:

• Proven reliability

• Shake Awake

• Solar Failsafe

• Dot Only or MRS options

---

X3 – Latest Generation Technology

Starting at $239.99, the X3 adds:

• Improved auto-brightness

• Updated electronics

• Enhanced lens coatings

• Modernized design

Perfect for shooters wanting Holosun's newest technology.

---

407Comp – Competition Value Leader

Starting at $279.99, the 407Comp may be the best value in Holosun's competition lineup.

You get:

• Same housing as the 507Comp

• Same oversized window

• Same durability

• Same competition-focused design

while saving over $100 compared to the 507Comp.

---

507Comp – Maximum Performance

Starting at $394.99, the 507Comp offers:

• Performance Reticle System

• Multiple circle sizes

• Largest competition window

• Maximum customization

This is Holosun's flagship competition optic.

---

Ronin – Exclusive Collaboration

Starting at $394.99, the Ronin combines:

• Large competition window

• Simplified MRS reticle system

• Ronin Tactics collaboration

• Exclusive styling

---

407Comp vs 507Comp

Many shooters ask whether the 507Comp is worth the extra money.

Buy the 407Comp If:

✔ You prefer a large 6 MOA dot

✔ You want a simple sight picture

✔ You shoot USPSA or Steel Challenge

✔ You want the same large window

✔ You want to save over $100

---

Buy the 507Comp If:

✔ You want multiple reticle options

✔ You like circle reticles

✔ You want maximum customization

✔ You use the optic for multiple applications

---

Competition Performance

For shooters focused on speed, the Comp and Ronin Series clearly stand out.

The larger window helps:

• Maintain sight picture during recoil

• Track the dot easier

• Improve target transitions

• Increase confidence at speed

For USPSA, Steel Challenge, and PCC shooters, the Comp Series has become one of the most popular optic choices available today.

---

Feature Comparison Chart

Feature	X2	X3	407Comp	507Comp	Ronin
Starting Price	$185.99	$239.99	$279.99	$394.99	$394.99
Available Dot Only Models	Yes (407 Series)	Yes (407 Series)	Yes	No	No
Available MRS Models	Yes (507 Series)	Yes (507 Series)	No	Yes (PRS)	Yes
Window Size	Standard	Enhanced	Largest	Largest	Largest
Housing Size	Standard	Enhanced	Same as 507Comp	Same as 407Comp	Same as 507Comp
Reticle Type	Dot Only or MRS	Dot Only or MRS	6 MOA Dot Only	PRS	MRS
Multiple Circle Sizes	No	No	No	Yes	No
Shake Awake	Yes	Yes	Yes	Yes	Yes
Solar Failsafe	Yes	Yes	Yes	Yes	Yes
Auto Brightness	Standard	Improved	Standard	Standard	Standard
Competition Focused	No	No	Yes	Yes	Yes
Red Dot Available	Yes	Yes	Yes	Yes	Yes
Green Dot Available	Yes	Yes	Yes	Yes	Yes
Gold Dot Available	No	Select X3 Models	No	Select Models	No
RMR Footprint	Yes	Yes	Yes	Yes	Yes

---

Which Holosun Should You Buy?

Choose X2 If:

• You want the best overall value.

• You need a dependable carry optic.

• You prefer a proven design.

Choose X3 If:

• You want Holosun's newest technology.

• You prefer improved auto-brightness.

• You want upgraded lens coatings.

Choose 407Comp If:

• You want a large competition window.

• You prefer a simple 6 MOA dot.

• You want to save money over the 507Comp.

Choose 507Comp If:

• You shoot competition regularly.

• You want maximum reticle customization.

• You prefer the PRS system.

Choose Ronin If:

• You want the large Comp-sized window.

• You prefer the traditional MRS system.

• You appreciate Ronin Tactics branding.

---

Final Verdict

For most concealed carry and defensive shooters, the X2 and X3 Series remain the best all-around choices thanks to their compact size, proven reliability, and versatile reticle options.

For competition shooters looking for maximum value, the 407Comp may be the hidden gem of the entire lineup. It delivers the same oversized competition window as the 507Comp while saving over $100 if you don't need multiple reticle options.

For serious competitors, the 507Comp remains the flagship competition optic thanks to its Performance Reticle System and unmatched customization.

For shooters who want competition-level performance with exclusive styling and a simplified MRS reticle system, the Ronin delivers the best of both worlds.

No matter which optic you choose, Holosun continues to offer some of the best performance-to-value optics available today.