Check out our top picks for the best micro red dots under $400. These sights are favorites for use on handguns, rifles, and shotguns and have been thoroughly tested and proven to perform flawlessly. These include brands from:
- Sig Sauer
Click here to see our full selection and upgrade your handgun optics today.
Micro Red Dots Under $400 [Updated 2023]
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Top 3 Options
Best For Subcompact
Best For Rimfire
HoloSun 507C X2 - Best Overall
The Holosun 507 X2 is the newer model of the design with side battery loading asight can do pretty much everything the Trijicon R M R can, and The NEW 507C X2 is among one of their best products to buy.
Never Quit Working – Lasts over 100,000 hours plus solar power, Solar Failsafe kicks in even if the battery fails to keep you in the fight longer
Side Battery Access - Access the battery from the side. No sight removal is required nor re-zeroing
Lockout Mode - No more accidental brightness adjustment due to random button press
R M R Mounting Footprint - No need to buy a special mounts
Motion Activated Reticle – Shake Awake technology activates the reticle upon motion and turns off when sitting at idle
Multi-Reticle System - Cycle through the following reticle options for various applications:
- 2 MOA Center dot
- 32 MOA circle
- 32 MOA circle + 2 MOA Dot
Read Detailed 507C X2 Review Here
Holosun 507K X2 - Best For Sub Compact Guns
Why people love Holosun 507K X2 – If you like the full size 507C, then this is the smaller version for concealed carry use
Snag free holster draw performance - The rugged exterior housing can withstand wear against clothing, so no snag hazard when drawing out of any IWB or OWB holsters.
Activates via motion sensor - Holosun ShakeAwake technology instantly activates the reticle upon any motion & it saves battery by deactivating the reticle while in rest.
Recoil proven - The sight can handle +P ammo without any issue. No worry of optic turning off or battery compartment getting loose.
Simple battery change without hassle - The 50k hrs long lasting CR1632 battery (On setting 6) can be accessed from the side tray instead of the bottom, which eliminates the need to remove the sight for a battery change.
Vortex Venom - Lowest Profile Sight
Why we picked Vortex - The Vortex Venom sits low on handguns and the lens is much more durable for hard use even it doesn't look like it.
Low Profile - Compact size red dot sits low on the slide and it works for holsters made for high retention.
Clean Dot - 6 MOA size reticle works the best for people with astigmatism, and it appears much rounder and less starburst when crank up the brightness
Super Strong Low Profile Sight - Weighing only 1.1 oz built with rugged aluminum housing, enlarged lens window with multi-coated material to increase light transmission
Large Field of View For Better Situational Awareness - Unlimited eye relief for rapid target acquisition along with parallax-free red dot that makes you shoot faster and more accurate on the clock
Swampfox Justice - Tapered Large FOV
Why we picked this one - The Swampfox Justice features an unique tapered FOV window profile while using the same R M R footprint.
Shake Awake - Optic stays on for up to 4+ years, and it features motion sensor technology to save even more battery juice
Track The Dot Better - Slightly more window room to find the dot
Top Loading Battery - It's the same user friendly battery compartment design as the Trijicon SRO
Burris Fastfire III - Lightest Weight
Why Buy The FastFire III - Turn your handgun and subgun into a lightweight race gun with the FastFire 3. It's small, durable and compact for any shooting applications especially competition shooting.
Light & Tough For Speed Advantage - Increase get-on-target speed, and use it as the primary or backup offset optic
Compatible With Very Optics Ready Handgun - Shooting pistols with a red dot sight is popular, hit targets more accurately with your handgun with this compact size optic and win your next shooting match
Nikon P-Tactical Spur - Best For Value
Image Referenced NIKON
The Nikon P Tactical Spur Nikon feels like something out of the Call Of Duty Modern Warfare game. It works and won't burn a hole in your wallet.
Built to Excel - The Spur is sexy, rugged and high tech, wide 27mm large FOV with multiple-coated lens allows shooting two eyes open. Weighing only 1.1 ounce able to withstand full-power tactical shotgun slug without shifting zero
Top Loading Battery Without Sight Removal - Removing the sight could shift the zero a little, eliminate the hassle of re-zeroing with the top-loading battery design to quickly change the battery without removing the sight to preserve sight zero
Sexy Exterior Construction - Built with lightweight 6061 T6 Aluminum, this shockproof optic not only look sexy but it works on rifle & PCC carbines, shotguns and pistols with its Large FOV glass for fast on target acquisition
Core Features To Look For
- Large Window - Allows faster speed on target as soon as the shooter picks up the sight, and it will provide more room to track the dot during fast follow-up shots.
- Recoil resistant - High G force during the slide cycle could throw off your zero. It's very important the sight is well built.
- Brightness Settings Adjustment - Pick an optic that lets you can adjust the dot brightness with a wide range of settings for daytime and nighttime use.
- MOA Red Dot Size - 1 to 2 MOA dot size is common on red dot sights for distance shooting with a finer dot, and 4 MOA or up is for close range.
- Strong Front Lens Frame - This allows the shooter to rack the slide easily against something for tactical reasons without damaging the lens.
For Angled Offset Use
An offset red dot sight lets the shooter shoot around corners and barricade by canting the rifle with much better flexibility.
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.