Best Red Dot Sights for Sig Sauer MPX

trijicon mro on sig mpx

The Sig Sauer MPX is one of the most popular pistol caliber carbine. For those of you looking for the best red dot sight for Sig Sauer MPX, they're:

  • Holosun 510C
  • EOTech
  • Trijicon MRO
  • Sig Romeo 5

Most optics on the market today will work just fine on this 9mm sub gun.

but... people want to optimize their MPXs for PCC competitions.

We have created this products guide to help you narrow down your options... check them out below.

Best Red Dot Sights for the MPX (High-End)


  • Features:2 MOA dot, Motion activated, Both battery & solar, 3 Reticle options
  • Benefits:Lightweight, Fast on target, Power never dies, Similar to EOTech @ 1/2 the price

trijicon mro on sig mpx
  • Features:2 MOA Dot, 0.5 MOA /Click, 7075 T-6 Construction, 1X25mm lens, Aftermarket mounts accepted 
  • Benefits:Large FOV with reduced tube effect, Reduce lateral view obstruction, Battle-proven durability

  • Features:2 MOA Dot, 1X20mm, 0.5 MOA /Click, CR2032 Battery
  • Benefits:Lens cover protection, Upgraded QD mounts, 100K+ battery life, IPX-7 Rated, Great for air gun, PCC & rifles

sig romeo 5 red dot sight
  • Features:MOTAC, 2 MOA dot, 40K hrs battery, 2 NV settings
  • Benefits:40K hrs Long battery life, Precision dot for medium range engagement, Low profile for PCC sub-gun, Aftermarket mounts accepted

Holosun 510C - Best Overall

HoloSun makes great PCC reflex red dot sight for AR15 pistols and various sporting rifles on the market right now. 

Why use this optic - If you are new to pistol caliber rifles, the Holosun 510C is the best durable entry level reflex optic without spending big money and it will send 9mm, 40SW & 45ACP down range accurately like a laser pointer

Large Lens For Faster Shooting – Lens size is an important spec of how fast you shoot and track the dot in a match, parallax-free holographic sight with unlimited eye relief with this large POV to instantly place the dot on the target while shooting on the move or transitioning with both eyes open

Extended battery life – Power source is an important part of a high-quality optic for non-stop use, increase battery life with the new Solar Failsafe system to strengthened reliability and longevity

Mount on any M1913 Rail – This sight can mount on MPX and any other guns as long as they feature M1913 picatinny rail.

If this is the first time buying a AR style PCC rifle, the Holosuun 510C is a great way to start without spending too much money. Be sure to go through our link to get the best deal online.

Sig Sauer ROMEO 5 - Best Budget Option

Get this if on a budget - The ROMEO5 is a robust, compact red dot optic offering from Sig Sauer. It's ultra-low parallax so the point-of-aim is the point-of-impact and the red dot remains parallel to the bore of the firearm.

2 MOA dot size with 10 illumination settings including 2-night vision works extremely well in all light conditions.

It uses 1 CR2032 battery that runs up to 40,000 hours, and the cool part is it has the same motion-activated reticle like the HoloSun for battery consumption and longevity.

Also accepts standard Aimpoint Micro aftermarket mounts

Trijicon MRO - Best FOV Sight

john wick 3 sig mpx

Why large FOV matters for most shooters - The Trijicon Miniature Rifle Optic has the largest field of view among other tube style red dot optics for max situational awareness.

One thing unique about the design is that the brightness adjustment is on the top of the optic, which eliminates view obstruction on the sides, and it also made it ergonomic for lefties and righties.

The tapered body design allows the tube to remain small while giving the shooter a wide view.

The optic is built with 7075 T6 aluminum alloy, the toughest material the industry has to offer, which can withstand a lot of rough handling especially if you like to run your gun hard.

What people think of the MRO - In the past, people if anything like this exist it will fly off the shelf almost immediately because Aimpoint Micro cornered the market.

Not only this sight is featured on the MPX in the movie John Wick, in real life, but the Trijicon MRO is also a good option for anyone who just getting started with the shooting.

If you're new and want something as tough as the Aimpoint but without spending over $800 please check the best price by clicking on the button below.

Common FAQ

How Is The John Wick Sig MPX Configured

Taran Tactical Sig MPX with Trijicon MRO and TLR 8
Buy This On Brownells

The SIG MPX was on steroid in the 3rd John Wick movie. Without spoiling the movie you can check it out here.

Even though it was just a movie, they portrait the gun very realistically and it was very enticing for people to buy what they see in the movie.

Large POV Trijicon MRO set up with the lower 1/3 Giessele Super Precision mount gives more eye box and also prevent the TLR-8 from obstructing the field of view.

In the movie, John blasted multiple bad guys with the TLR 8 green laser sight turned on. However, in real life aiming through the red dot sight is way more practical.

Where Is The Best Optic Mounting Spot on The MPX

Optimal optic mounting location on Sig MPX
Image Referenced

The optimal spots to mount an optic on the Sig MPX top receiver is the distance between the trigger guard to where to ejection port is.

The closer you mount the sight with a large field of view optic, the faster you can pick up the sight and you have a larger eye box to work with.

The Sig MPX is a well-balanced sub-gun. Whether you're using an SBR, pistol or full-length carbine. Mounting a lightweight optic doesn't affect the weight balance or handling whatsoever.

What Co-Witness Height Works The Best On The MPX?

Where you cheek weld the MPX is similar to an AR15 or the Sig MCX. An absolute co-witness height will do the job, but a 1/3 or lower 1/3 mount height gives you a bit extra room for eye box comfort.

I personally like to use the lower 1/3 co-witness mount for my MPX.

What's The Best Magnifier For The MPX

Magnified JULIET4 optics for Sig MPX

A 9mm PCC isn't designed for reaching long distances, however, a 9mm can reach as far as 100 yards and still be very accurate.

Putting an ACOG or a magnified low power variable scope isn't necessary, instead, we recommend using a red dot sight magnifier like the Sig Sauer JULIET4 for more zoom.

Ying Xu

US Air Force veteran nuclear weapon officer. Aerospace engineering bachelor's degree from the University of Kansas. Experienced as a certified NRA range safety officer. Working as a search engine expert for