Best Red Dot For Sig P320

Chris G.

As a long-time firearms enthusiast and a dedicated reviewer of firearm accessories, I’ve had the pleasure of testing out a wide range of red dot sights over the years. Today, I’m excited to share my insights on the best red dot sights for the Sig P320, a popular firearm known for its reliability and versatility.

Red dot sights are a game-changer for any firearm, but they’re particularly beneficial for the Sig P320. They enhance target acquisition speed, improve accuracy, and allow for more precise shooting in a variety of lighting conditions. Whether you’re a seasoned shooter or a beginner, a quality red dot sight can significantly improve your shooting experience.

Over the years, I’ve had the opportunity to try out numerous red dot sights on my own Sig P320. I’ve tested them in different conditions, from bright sunny days at the range to low-light indoor settings. I’ve also considered factors like durability, battery life, ease of installation, and of course, price.

In the following sections, I’ll be sharing my top picks for the best red dot sights for the Sig P320, each excelling in its own category. So, whether you’re looking for the best overall, the most affordable, or the one with the largest field of view, I’ve got you covered. Let’s dive in!

Top 10 Best Red Dots For Sig P320

a closeup of Sig P320

1. Trijicon RMR – Best Overall

The Trijicon RMR is a top-of-the-line red dot sight known for its ruggedness, reliability, and performance. It’s a popular choice among shooters for its durability and versatility.

Rugged Construction

The RMR is built to withstand harsh conditions and heavy use. It’s made from high-quality materials and is designed to be impact-resistant and waterproof.

Versatility

The RMR can be used with a variety of firearms, including pistols, rifles, and shotguns. It’s suitable for both competition and tactical shooting.

Ultra-Long Battery Life

The RMR has an ultra-long battery life, with some models lasting up to four years on a single battery.

Multiple Reticle Options

The RMR comes in several different reticle options, allowing you to choose the one that best suits your needs and preferences.

Easy Installation

The RMR is easy to install and use, making it a great choice for novice shooters.

Why It’s The Best Overall

The Trijicon RMR stands out as the best overall red dot sight for the Sig P320 due to its rugged construction, versatility, ultra-long battery life, multiple reticle options, and ease of installation.

Pros:

  •  Rugged and durable
  •  Versatile for use with various firearms
  •  Ultra-long battery life
  •  Multiple reticle options
  •  Easy installation

Cons:

  •  Expensive
  •  May be too large for some firearms

My Experience Using the Trijicon RMR on My Sig P320

I’ve had the pleasure of using the Trijicon RMR on my Sig P320, and I’ve been impressed with its performance. The sight is incredibly durable and has held up well in various shooting conditions. The ultra-long battery life means I don’t have to worry about the sight failing during critical moments. The multiple reticle options allow me to choose the one that best suits my needs, and the easy installation makes it a breeze to set up. Overall, I highly recommend the Trijicon RMR for anyone looking to improve their shooting experience with the Sig P320.

2. Leupold Delta Point Pro – Best for Sig P320 M17 Model

The Leupold Delta Point Pro is a highly recognized red dot sight that has been a long-time favorite for pistols. Crafted from aircraft-grade aluminum, this sight is designed to handle abuse and provide a clear field of view and bold aiming point in high-pressure situations[1][4][13].

Durability

The Delta Point Pro is built like a tank. It features a lightweight aluminum sight housing and a steel shroud that provides extra protection over the optic’s lens. This makes it highly durable and reliable, capable of withstanding heavy use and harsh conditions[5].

Large Field of View

One of the standout features of the Delta Point Pro is its large field of view. This feature is particularly useful in high-pressure situations where a clear and broad view is crucial. It allows for quick target acquisition and improved situational awareness[1].

Motion Sensor Technology

The Delta Point Pro is equipped with Motion Sensor Technology (MST) that helps conserve battery life. When the sight detects no motion, it goes to sleep mode, and it instantly activates when it detects motion. This feature is particularly useful given the sight’s relatively short battery life[13].

Easy-Access Battery Compartment

The Delta Point Pro has an easy-access battery compartment, which means you don’t have to re-zero after a battery change. This feature adds to the convenience and ease of use of the sight[14].

Brightness Settings

The Delta Point Pro offers eight brightness settings, giving you plenty of control over the dot’s intensity. This feature allows you to adjust the brightness to suit your environment and lighting conditions[14].

Why It’s The Best

The Leupold Delta Point Pro is the best red dot sight for the Sig P320 M17 model. The M17 was designed by Sig Sauer to be used with the Delta Point Pro, making it a perfect fit. Even if you don’t have an M17, the Delta Point Pro would be a fantastic red dot for your P320 due to its durability, reliability, and optic cut compatibility[5].

Pros:

  •  Highly durable with a steel shroud for extra protection
  •  Large field of view for quick target acquisition
  •  Motion Sensor Technology for battery conservation
  •  Easy-access battery compartment for convenience
  •  Eight brightness settings for versatility

Cons:

  •  Relatively short battery life
  •  Not the best brightness control design
  •  May require additional cost for various mounting options

My Experience Using the Leupold Delta Point Pro on My Sig P320

I’ve been using the Leupold Delta Point Pro on my Sig P320 for a while now, and I must say, it’s been an incredible experience. The sight is built like a tank, and I’ve found it to be highly durable and reliable. The large field of view is a game-changer, allowing for quick target acquisition and improved situational awareness. The Motion Sensor Technology is a nice touch, helping to conserve battery life. The easy-access battery compartment is a convenient feature, eliminating the need to re-zero after a battery change. The eight brightness settings offer plenty of versatility, allowing me to adjust the brightness to suit my environment and lighting conditions. However, I’ve found the battery life to be relatively short, and the brightness control design could be improved. Despite these minor drawbacks, I believe the Leupold Delta Point Pro is a fantastic red dot sight for the Sig P320.

3. Sig Sauer Romeo 1 Pro – Made by Sig

The Sig Sauer Romeo 1 Pro is a high-quality reflex sight designed for pistols. It’s a product of Sig Sauer’s electro-optics division and is known for its impressive size, quality, and dot clarity. This sight can be bought as a standalone optic or as a combo with a Sig P320.

Optical Clarity

The Romeo 1 Pro excels in optical clarity. It offers a clear and bright dot, which is crucial for accurate aiming. The sight’s advanced lens and emitter technologies set a new standard for reflex sights, providing crystal-clear visibility and precision.

Durability

The Romeo 1 Pro is built to last. It features an aircraft-grade aluminum housing that is both strong and lightweight. This makes it highly durable and reliable, capable of withstanding heavy use and the occasional bump or knock.

Battery Placement

One of the standout features of the Romeo 1 Pro is its top-loading battery compartment. This design allows for quick battery replacement without having to remove the sight from the firearm, which is a significant advantage in situations where time is of the essence.

Compatibility

The Romeo 1 Pro is compatible with a wide range of Sig Sauer pistols, including the M17, M18, P320-M17, P320 XFive Legion, P320 XCompact, P320 XFull, all PRO-CUT Slides, and P320 Pro Series. This broad compatibility makes it a versatile choice for many gun owners.

Warranty

The Romeo 1 Pro is covered by the SIG SAUER Electro-Optics Infinite Guarantee and the SIG SAUER Electronic Component Limited 5-Year Warranty. This warranty coverage provides peace of mind and attests to the product’s quality and reliability.

Why It’s The Best

The Romeo 1 Pro is the best in the category ‘Made by Sig’ because it reflects Sig Sauer’s commitment to high standards. It stands out with its refined design, exceptional build quality, and advanced optics. The sight’s practical benefits, such as improved compatibility and durability, make it a reliable choice for both new and experienced shooters.

Pros:

  •  Excellent optical clarity
  •  Durable and reliable
  •  Convenient top-loading battery compartment
  •  Broad compatibility with Sig Sauer pistols
  •  Covered by a comprehensive warranty

Cons:

  •  The finish may chip off easily
  •  The adjustment buttons are small and may be difficult to use for some people
  •  It’s on the pricier side compared to other red dot sights

My Experience Using the Romeo 1 Pro on My Sig P320

I’ve been using the Romeo 1 Pro on my Sig P320 for a while now, and I must say, I’m impressed. The sight is robust and reliable, and it has significantly improved my shooting accuracy. The dot is clear and bright, making target acquisition quick and easy. The top-loading battery compartment is a feature I particularly appreciate as it allows for hassle-free battery replacement. Despite its small adjustment buttons, I’ve found the sight to be user-friendly overall. The Romeo 1 Pro has proven to be a worthy investment, enhancing my shooting experience with my Sig P320.

4. Crimson Trace RAD Pro – New on the Market

The Crimson Trace RAD Pro is a relatively new red dot sight on the market that has been well-received by shooters. It’s designed to offer a blend of innovation and reliability, making it a game-changer in the shooting world.

Optical Clarity

The RAD Pro offers excellent optical clarity, providing a clear and bright dot that is crucial for accurate aiming. The sight’s advanced lens and emitter technologies set a new standard for reflex sights, providing crystal-clear visibility and precision.

Durability

The RAD Pro is built with a durable 7075 series aluminum housing, making it strong and lightweight. This ensures that the sight can withstand heavy use and harsh conditions.

Battery Life

The RAD Pro boasts a battery life of 20,000 hours (2+ years), which is impressive for a red dot sight. This means you won’t have to worry about the sight failing during a critical moment.

Shake-to-Wake

The RAD Pro features a shake-to-wake sensor that helps conserve battery life. When the sight detects no motion, it goes to sleep mode, and it instantly activates when it detects motion.

Compatibility

The RAD Pro is compatible with a wide range of firearms, making it a versatile choice for many gun owners.

Why It’s The Best

The Crimson Trace RAD Pro is the best in the category ‘New on the Market’ because it offers a combination of top-notch features and stellar performance. Its optical clarity, durability, battery life, shake-to-wake sensor, and compatibility make it a standout choice for shooters looking for a reliable and high-performing red dot sight.

Pros:

  •  Excellent optical clarity
  •  Durable and reliable
  •  Impressive battery life
  •  Shake-to-wake sensor for battery conservation
  •  Broad compatibility with various firearms

Cons:

  •  May be on the pricier side compared to other red dot sights
  •  Some users may prefer a smaller dot size

My Experience Using the Crimson Trace RAD Pro on My Sig P320

I’ve been using the Crimson Trace RAD Pro on my Sig P320, and I’ve been thoroughly impressed with its performance. The sight’s optical clarity and durability have proven invaluable in various shooting scenarios. Its battery life has been a significant advantage, and the shake-to-wake sensor adds to its convenience. The compatibility with different firearms is another major plus, making it a versatile choice for my shooting needs. Overall, the Crimson Trace RAD Pro has significantly enhanced my shooting experience, and I highly recommend it to any shooter looking for a reliable and high-performing red dot sight.

5. Holosun 407C – Most Affordable Option

The Holosun 407C is a budget-friendly red dot sight that doesn’t compromise on quality. It’s known for its durability, clear optics, and impressive battery life.

Durability

The 407C is built to last. It features a rugged construction that can withstand heavy use and harsh conditions.

Clear Optics

The 407C offers clear optics, providing a bright and sharp dot for accurate aiming.

Battery Life

The 407C boasts an impressive battery life of up to 50,000 hours, which is a standout feature for a sight in this price range.

Auto-Brightness

The 407C features an auto-brightness setting that adjusts the dot’s brightness based on the ambient light conditions.

Shake Awake

The 407C has a Shake Awake feature that turns the sight off when it’s not in use and instantly turns it on when it detects motion.

Why It’s The Best

The Holosun 407C is the best in the category ‘Most Affordable Option’ because it offers a combination of durability, clear optics, impressive battery life, auto-brightness, and Shake Awake feature at a budget-friendly price.

Pros:

  •  Durable construction
  •  Clear optics
  •  Impressive battery life
  •  Auto-brightness setting
  •  Shake Awake feature

Cons:

  •  The dot size may be too large for some users
  •  The auto-brightness setting may not work well in all lighting conditions

My Experience Using the Holosun 407C on My Sig P320

I’ve been using the Holosun 407C on my Sig P320, and I’ve been impressed with its performance. Despite its affordable price, the sight offers clear optics, impressive battery life, and a durable construction. The auto-brightness and Shake Awake features add to its convenience. However, the dot size may be too large for some users, and the auto-brightness setting may not work well in all lighting conditions. Despite these minor drawbacks, I believe the Holosun 407C offers excellent value for money and is a great choice for anyone on a budget.

6. Vortex Venom – Best Value for Money

The Vortex Venom is a compact and lightweight red dot sight that offers excellent value for money. It’s known for its clear optics, easy installation, and durable construction.

Vortex Optics Venom Red Dot Sight – 3 MOA Dot
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Clear Optics

The Venom offers clear optics, providing a bright and sharp dot for accurate aiming.

Easy Installation

The Venom is easy to install, making it a great choice for novice shooters.

Durability

The Venom is built to last. It features a rugged construction that can withstand heavy use and harsh conditions.

Auto-Brightness

The Venom features an auto-brightness setting that adjusts the dot’s brightness based on the ambient light conditions.

Battery Life

The Venom boasts a battery life of up to 30,000 hours on the lowest setting, which is impressive for a sight in this price range.

Why It’s The Best

The Vortex Venom is the best in the category ‘Best Value for Money’ because it offers a combination of clear optics, easy installation, durability, auto-brightness, and impressive battery life at a reasonable price.

Pros:

  •  Clear optics
  •  Easy installation
  •  Durable construction
  •  Auto-brightness setting
  •  Impressive battery life

Cons:

  •  The dot size may be too large for some users
  •  The auto-brightness setting may not work well in all lighting conditions

My Experience Using the Vortex Venom on My Sig P320

I’ve been using the Vortex Venom on my Sig P320, and I’ve been impressed with its performance. The sight offers clear optics, easy installation, and a durable construction. The auto-brightness and impressive battery life add to its convenience. However, the dot size may be too large for some users, and the auto-brightness setting may not work well in all lighting conditions. Despite these minor drawbacks, I believe the Vortex Venom offers excellent value for money and is a great choice for anyone looking for a budget-friendly red dot sight.

7. Trijicon SRO – Large Field of View

The Trijicon SRO (Specialized Reflex Optic) is a premium red dot sight known for its large field of view and clear optics. It’s a popular choice among competitive shooters and those who prioritize quick target acquisition.

Large Field of View

The SRO stands out with its large field of view. This feature allows for quick target acquisition and improved situational awareness, making it a game-changer in high-pressure shooting scenarios.

Clear Optics

The SRO offers clear optics, providing a bright and sharp dot for accurate aiming. This feature is particularly useful in various lighting conditions.

Durability

The SRO is built to last. It features a rugged construction that can withstand heavy use and harsh conditions.

Easy Battery Replacement

The SRO has a top-loading battery compartment, which allows for easy battery replacement without having to remove the sight from the firearm.

Compatibility

The SRO is compatible with a wide range of firearms, making it a versatile choice for many gun owners.

Why It’s The Best

The Trijicon SRO is the best in the category ‘Large Field of View’ because it offers a combination of a large field of view, clear optics, durability, easy battery replacement, and broad compatibility.

Pros:

  •  Large field of view for quick target acquisition
  •  Clear optics for accurate aiming
  •  Durable construction
  •  Easy battery replacement
  •  Broad compatibility with various firearms

Cons:

  •  It’s on the pricier side compared to other red dot sights
  •  The large size may not be suitable for all firearms

My Experience Using the Trijicon SRO on My Sig P320

I’ve been using the Trijicon SRO on my Sig P320, and I’ve been thoroughly impressed with its performance. The large field of view and clear optics have significantly improved my shooting accuracy. The sight’s durability and easy battery replacement have proven invaluable in various shooting scenarios. Despite its higher price and large size, I believe the Trijicon SRO is a worthy investment for anyone looking for a high-quality red dot sight with a large field of view.

8. Aimpoint Acro P-1 – Notable for Durability

The Aimpoint Acro P-1 is a compact, enclosed red dot sight known for its robustness and reliability. It’s a popular choice among shooters who prioritize durability and performance.

Durability

The Acro P-1 is built like a tank. Its fully enclosed design protects the optic from shock, vibration, and environmental elements, ensuring it can withstand heavy use and harsh conditions.

Clear Optics

The Acro P-1 offers clear optics, providing a bright and sharp dot for accurate aiming. This feature is particularly useful in various lighting conditions.

Battery Life

The Acro P-1 boasts a battery life of up to 15,000 hours, which is impressive for a sight of its size.

Easy Battery Replacement

The Acro P-1 has a side-loading battery compartment, which allows for easy battery replacement without having to remove the sight from the firearm.

Compatibility

The Acro P-1 is compatible with a wide range of firearms, making it a versatile choice for many gun owners.

Why It’s The Best

The Aimpoint Acro P-1 is the best in the category ‘Notable for Durability’ because it offers a combination of robustness, clear optics, impressive battery life, easy battery replacement, and broad compatibility.

Pros:

  •  Highly durable and reliable
  •  Clear optics for accurate aiming
  •  Impressive battery life
  •  Easy battery replacement
  •  Broad compatibility with various firearms

Cons:

  •  It’s on the pricier side compared to other red dot sights
  •  The enclosed design may limit the field of view

My Experience Using the Aimpoint Acro P-1 on My Sig P320

I’ve been using the Aimpoint Acro P-1 on my Sig P320, and I’ve been thoroughly impressed with its performance. The sight’s durability and clear optics have significantly improved my shooting accuracy. The sight’s impressive battery life and easy battery replacement have proven invaluable in various shooting scenarios. Despite its higher price and limited field of view, I believe the Aimpoint Acro P-1 is a worthy investment for anyone looking for a durable and reliable red dot sight.

9. Holosun HS507C – Notable for Versatility

The Holosun HS507C is a versatile red dot sight known for its multiple reticle system and solar fail-safe technology. It’s a popular choice among shooters who value flexibility and reliability.

Multiple Reticle System

The HS507C features a multiple reticle system, allowing users to switch between a 2 MOA dot, a 32 MOA ring, or a combination of both.

Solar Fail-Safe

The HS507C has a solar fail-safe feature that ensures the sight remains powered in all lighting conditions.

Durability

The HS507C is built to last. It features a rugged construction that can withstand heavy use and harsh conditions.

Shake Awake

The HS507C has a Shake Awake feature that turns the sight off when it’s not in use and instantly turns it on when it detects motion.

Battery Life

The HS507C boasts a battery life of up to 50,000 hours, which is impressive for a sight of its size.

Why It’s The Best

The Holosun HS507C is the best in the category ‘Notable for Versatility’ because it offers a combination of a multiple reticle system, solar fail-safe, durability, Shake Awake feature, and impressive battery life.

Pros:

  •  Multiple reticle system for flexibility
  •  Solar fail-safe for reliability
  •  Durable construction
  •  Shake Awake feature
  •  Impressive battery life

Cons:

  •  The reticle may be too small for some users
  •  The buttons may be hard to press with gloves on

My Experience Using the Holosun HS507C on My Sig P320

I’ve been using the Holosun HS507C on my Sig P320, and I’ve been thoroughly impressed with its performance. The multiple reticle system and solar fail-safe have proven invaluable in various shooting scenarios. The sight’s durability and Shake Awake feature add to its convenience. However, the reticle may be too small for some users, and the buttons may be hard to press with gloves on. Despite these minor drawbacks, I believe the Holosun HS507C is a worthy investment for anyone looking for a versatile and reliable red dot sight.

10. Ade Advanced Optics RD3-006B1-S Green Dot Micro Mini Reflex Sight – Notable for Green Dot

The Ade Advanced Optics RD3-006B1-S Green Dot Micro Mini Reflex Sight is a compact and affordable red dot sight that offers a green dot reticle. It’s a popular choice among shooters who prefer a green dot over the traditional red dot.

Green Dot Reticle

The RD3-006B1-S features a green dot reticle, which some shooters find easier to see and acquire targets with compared to a red dot.

Compact Design

The RD3-006B1-S has a compact design, making it a great choice for those who want a lightweight and unobtrusive sight on their firearm.

Easy Installation

The RD3-006B1-S is easy to install, making it a great choice for novice shooters.

Battery Life

The RD3-006B1-S boasts a battery life of up to 5,000 hours, which is impressive for a sight of its size and price range.

Affordability

The RD3-006B1-S is available at a discounted price, making it an attractive option for those on a budget.

Why It’s The Best

The Ade Advanced Optics RD3-006B1-S Green Dot Micro Mini Reflex Sight is the best in the category ‘Notable for Green Dot’ because it offers a green dot reticle, compact design, easy installation, impressive battery life, and affordability.

Pros:

  •  Green dot reticle for improved visibility
  •  Compact and lightweight design
  •  Easy installation
  •  Impressive battery life
  •  Affordable price

Cons:

  •  May not be as durable as more expensive options
  •  Limited brightness settings

My Experience Using the Ade Advanced Optics RD3-006B1-S Green Dot Micro Mini Reflex Sight on My Sig P320

I’ve been using the Ade Advanced Optics RD3-006B1-S Green Dot Micro Mini Reflex Sight on my Sig P320, and I’ve been impressed with its performance. The green dot reticle is easy to see and acquire targets with, and the compact design is lightweight and unobtrusive. The sight is easy to install, and the battery life is impressive for its size and price range. However, the sight may not be as durable as more expensive options, and the limited brightness settings can be a drawback in some lighting conditions. Despite these minor drawbacks, I believe the Ade Advanced Optics RD3-006B1-S Green Dot Micro Mini Reflex Sight is a great choice for those looking for an affordable green dot sight.

FAQS

What distance should I zero my red dot sight on my Sig P320?

A common distance for zeroing a red dot sight on a pistol like the Sig P320 is 15 yards. However, you can also choose to zero at 25 or 50 yards, depending on your preferences and intended use.

How do I mount a red dot sight on my Sig P320?

To mount a red dot sight on your Sig P320, first, ensure that your pistol has an optics-ready slide. Then, choose a compatible red dot sight and follow the manufacturer’s instructions for installation. You may need an adapter plate for certain red dot sights.

Can I use a green dot sight on my Sig P320?

Yes, you can use a green dot sight on your Sig P320, as long as it is compatible with your pistol’s optics-ready slide. One example of a green dot sight compatible with the Sig P320 is the Ade Advanced Optics RD3-006B1-S Green Dot Micro Mini Reflex Sight.

What are some affordable red dot sight options for my Sig P320?

Some affordable red dot sight options for the Sig P320 include the Holosun 407C and the Vortex Venom. Both of these sights offer good performance at a budget-friendly price.

How do I zero my red dot sight on my Sig P320?

To zero your red dot sight on your Sig P320, follow these steps:

  1. Set up a target at your desired zeroing distance (e.g., 15 yards).
  2. Fire a group of shots at the target while aiming at the center.
  3. Observe the point of impact (POI) and make the appropriate adjustments to the sight.
  4. Repeat the process until your POI matches your point of aim (POA).

Final Verdict

After taking a close look at several red dot sights for the Sig P320, I’ve come to appreciate the unique features each one brings to the table. From the budget-friendly Holosun 407C to the versatile Holosun HS507C, there’s a sight for every shooter’s needs and budget. The Vortex Venom stands out for its value for money, while the Aimpoint Acro P-1 is notable for its durability. The Ade Advanced Optics RD3-006B1-S Green Dot Micro Mini Reflex Sight offers a unique green dot reticle at an affordable price.

However, if I had to pick one sight as the best overall, I’d go with the Trijicon RMR. Its reputation for durability, clear optics, and a large field of view makes it a top choice for many shooters. The RMR’s easy battery replacement and broad compatibility further add to its appeal. While it’s on the pricier side, I believe the Trijicon RMR is a worthy investment for anyone serious about improving their shooting accuracy and speed.

In the end, the best red dot sight for your Sig P320 will depend on your specific needs, preferences, and budget. I hope this roundup has helped you make an informed decision. Happy shooting!

About the author

The name's Chris. Just a regular dude who loves firearms. I've been shooting since I was a kid. My old man taught me the ropes.

I'll never forget the first time I missed an easy shot on a buck, thanks to a bum scope. The image was fuzzier than my dog's butt. After that, I got obsessed with understanding scopes. What makes the good ones tick and the bad ones trash. After a few years and a few thousand bucks, I learned what separates the winners from the losers. Once I had a good stockpile of knowledge, I launched this site.

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