In this guide, let's check out some of the 8 best large window red dot sight for pistol use.
These are large field of view optics designed to provide extra room for the shooter to find the dot when presenting the gun, and widen situational awareness and negate minor shooter's aiming error. We have tested these products in airsoft training and on the live firing range to find what we like and don't like.
Our recommendation in this guide ensures only the most durable and widest FOV red dot sights are included in this list.
Large Window Red Dot Sight
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Trijicon SRO - Best Overall
Overall Window Size: 1X24mm
Why we picked this one - The SRO fits on any slide with an RMR cut. If you want a pistol red dot sight with the biggest view, choose the Trijicon SRO.
Same RMR mounting footprint - Using the exact Trijicon RMR mounting footprint keeps everything compatible without having to buy special accessories.
Not Lose The Dot - Find the dot quickly and steadily, even if you're a bit off-center when presenting the pistol fast. Also reacquire the dot much faster after each follow-up shots
Automatic Mode - Improved brightness control system to lock the mode for conceal carry
Various Dot Sizes - Choose from 1 MOA to 6.5 MOA. 6.5 MOA is highly recommended for pistol use
Top Battery Access - Load/Replace battery right from the top! No sight removal or re-zero required
Trijicon RMR HD - 3rd Gen RMR
Overall Window Size: ~1X25mm
The Trijicon RMR® HD is a new red dot pistol sight made for the police and the military. It's built from the earlier Trijicon RMR® Adjustable LED sight. This is putting RMR and SRO together.
Durable RMR Style Lens Frame - Unlike the SRO, the RMR HD has a tougher lens frame now for duty use.
User Friendly Buttons - Easily dial the buttons with bare hands or wearing glvoes
Auto Reticle Adjustment - This sensor checks the light where you're aiming and changes the red dot's brightness for you. You can also pick different patterns for the red dot. Some patterns are bright for daytime, and others work with night vision.
Dot Or Circle - The user can adjust the reticle style to have an unclutter center dot or with a reticle ring
The Trijicon RMR HD is what the Trijicon SRO could have been, and now it's here that.
Leupold DeltaPoint Pro - Best Durability
Overall Window Size: ~1X25.7mm
The DeltaPoint Pro has similar FOV size as the Trijicon SRO but in a retangular shape with extra hood protection. This is Leupold's best selling micro red dot sight for pistol and rifle use.
Larger Window Than RMR - The first well known handgun optic in the market with a large window for faster target acquisition speed.
Extra Housing Protection - Lens hood protects the main optic glass frame from direct impact to increase the durability
Easier Battery Access - Load/Replace battery right from the top
6 MOA - 6 MOA dot size is now available for pistol applications. Works better for shooters with astigmatism
Swampfox Liberty - Unique FOV Design
Overall Window Size: ~1X27mm
Why we picked this one - The Swampfox Liberty uses the same RMR footprint to fit on any existing RMR optic cut. The FOV gets bigger on top without increase the base width of the optic.
Track The Dot Better - Wide 1X27mm FOV helps dot tracking within the window.
Skeletonized Body - Weight reduction and fits most optic ready holsters including ALS series duty holsters
Shake Awake - IMotion sensor activates the optic reticle when in motion (Even just a small tap)
Top Loading Battery - Same user friendly design as the Trijicon SRO
Sig ROMEO3 MAX - Unique FOV Design
Overall Window Size: 1X30mm
The Sig ROMEO 3 MAX 1X30mm is an product in direct competition to the Trijicon SRO around the same time they were released.
This open reflex optic is designed for competition (influenced by Max Michel) use that features similar large circular window like the SRO.
The run time is about 20K hours (uses CR2032 battery) shorter than the Trijicon SRO, but the rest of the optic features similar specs.
3 and 6 MOA dot size are available.
As far as for users with astigmatism who want bigger dot sizes, the 6 MOA dot size is a better option.
Trijicon MRO - No Tube Effect
Overall Window Size: 1X25mm
Why Get The MRO - The MRO is as strong as the Aimpoint Micro, but with bigger field of view at a cheaper price point. It accepts all types of aftermarket mounts to make it work on your gun.
Reduced View Obstruction - No view obstruction on the sides due to turret or brightness adjustment knobs. It's also ergonomical for lefties and righties.
Reduced Tube Effect - The tapered body design allows the tube to remain small while giving the shooter a wide view.
Battle Proven Durability - The 7075 T6 aluminum body survives rough handling, drops, recoils and kicks
Holosun 510C - Best For The Money
Overall Window Size: ~1X32mm
Find Target Fast - It's very helpful when shooting on the move or transitioning with both eyes open thanks to the large viewing window that doesn't obstruct shooter's view.
Flexible Head Movement - Parallax free reticle stays on target accurately even if the shooter's eye shifts off center horizontally or vertically.
Versatile Reticle System - Use the 65 MOA reticle circle for range estimation
Holosun AEMS - Unique FOV Design
Overall Window Size: 1X28mm
The AEMS is Holosun's newest large window enclosed emitter red dot sight (IPX7 rated). In many ways, this product will set the new standard for Holosun rifle and PCC red dot sights.
Smaller Profile - AEMS is small and almost look like an Holosun 509T for PDW type rifle setup
Lens Cover - Included both front and back see through lens cover
7075 T6 Construction - Built with materials stronger than the standard 6061 T6 aluminum
Motion Sensor - It features the same MOTAC system as many Holosun products
Green or Red Reticle - Pick the reticle color you like
CQB Ring Reticle - 2 MOA center dot with the option to turn on the 65 MOA ring for range estimation and mechanical offset
Steiner R1X - Unique FOV Design
Overall Window Size: 1X32mm
The Steiner R1X is one of a kind red dot sight that's compact and beefy looking. The R1X reduces the “tunnel vision” of hard-focus iron sights for quicker target acquisition, enhanced accuracy and greater situational awareness.
Holosun 507C ACSS - Best Assisted Dot Tracking
Overall Window Size: 1X23mm
The Holosun 507C ACSS has a window size close to the Trijicon RMR. Its ACSS Vulcan reticle is made to help shooters spot the reticle quickly without making the window bigger.
The whole point of a big window red dot sight is to have wider field of view and to track the dot better. The ACSS Vulcan reticle is an unique design worth checking out
As the content creator of badassoptic.com, My background in the firearms industry and shooting sports gives me the experience to recommend tried and true products and keep away subpar ones.
