Here are the 4 best red dot sight for 300 blackout

We picked them based on durability, dot sizes, reticle design, weight and price. Most of the selected products are exactly the same used for other calibers. However the difference is learning how to zero the red dot for 300 Blackout ballistic performance once it's mounted on the rifle.

Let's check them out:

300 Black Out Red Dot Sights Guide

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Trijicon SRO - Lightweight Setup

trijicon sro benelli m4
The Trijicon SRO red dot sight provides any 300 blackout AR 15 pistol with low profile and lightweight configuration. The red dot sight allows the shooter to acquire targets much faster with at close range.

Very Low Profile - The Trijicon SRO is very slim and low profile to mount on an short 300 blackout AR pistol for a truck gun as well as for home defense

Top Loading Battery - No sight removal or re-zeroing  required when swapping out the battery 

Great Reticle Clarity - 5 MOA dot is the best dot size for shooters with astigmatism and it's great for CQB work with the 300 Blackout round. For slightly more precision aiming, we recommend the 1 MOA dot

Many Mount Options – Use any aftermarket RMR footprint mounts available on the market


  • Magnification: 1X
  • Eye Relief: Unlimited
  • Reticle Type: 1, 2.5 or 5 MOA Red Dot
  • Turret : 1 MOA / Click
  • Length: 2.2 inches
  • Weight: 1.6 oz

In Depth Trijicon SRO Review

Sig Sauer ROMEO 5 - Best For The Money

romeo5 pov red dot reticle on steel target

The Sig Romeo 5 red dot is the best for the money option for an AR 15 300 blackout rifles under $150. The optic features the same Aimpoint Micro footprint, so the user can pick among a wide selection of mounts. Our favorite is the Scalarworks 1.93" height mount.

Multiple Brightness Adjustments - Dial the brightness to use under any lighting conditions 

Very Long Battery Life - The built in MOTAC system saves battery power when the optic sits idle. (However, may not be a good truck gun if the battery is always on when the vehicle is moving)

Low Dispersion Glass - No color tint, No lens distortion = better target identification


  • Magnification: 1X20mm
  • Eye Relief: Unlimited
  • Reticle Type: 2 MOA Red Dot
  • Turret : 0.5 MOA / Click
  • Length: 2.4 inches
  • Weight: 5.1 oz

Aimpoint Micro - Best Durability

aimpoint micro fov
The Aimpoint Micro is still the red dot sight for any 300 blackout configurations. This closed emitter optic provides a 300 blackout rifle the ultimate aiming solution. The battery lasts forever (5+ years), and the user can just leave it on and the dot is always ready when you pick it up without pressing any button

Wide Situational Awareness - Minimal POV obstruction to aim, shoot, scan, and maneuver fast at the same time

Waterproof - Fully sealed to IPX8 standard including 15 ft submersion capability 

Many Mounts Available - Choose any Aimpoint Micro mounts from reputable companies such as LaRue, Scalarworks, American Defense and more

CQB & Mid Range -  Extend the range simply by adding a red dot magnifier to ID targets better at longer distances


  • Magnification: 1X
  • Eye Relief: Unlimited
  • Reticle Type: 2 MOA Red Dot
  • Turret : 0.5 MOA / Click
  • Length: 3.1 inches
  • Weight: 4.7 oz

Read Aimpoint Micro T2 VS H2 Review

EOTECH XPS2 - Best Holographic Sight For 300 Blackout

eotech exps3 fov

Why Use The EOTech? The EOTECH XPS2's reticle is calibrated for subsonic and supersonic 300 blackout rounds. In addition, the EOTECH holographic sights are the best passive aiming solution for most weapon systems including the AR15. 

Fast Target Acquisition - The featured sharp two dot ballistic drop reticle is extremely fast to acquire target up close and far 

Made In The USA - American made product!

Shoot With Both Eyes Open - One eye aim, the other scans to maximizes situational awareness and aiming performance while under stress in tight CQB environments


  • Magnification: 1X
  • Eye Relief: Unlimited
  • Reticle Type: 2 MOA Red Dot
  • Turret : 0.5 MOA / Click
  • Length: 3.1 inches
  • Weight: 9 oz