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Primary Arms SLx RS-10R 1x23mm Mini Reflex Red Dot Sight
$234.99 $209.99 Save 11%
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Most Helpful Positive Review Very Good Dot
This is an amazing RMR footprint dot. I was initially wary of ordering this since the original RS10 was not received well and had known refresh rate issues. Primary Arms resolved that entirely with this model. The fitment into and RMR/507C optics footprint is excellent. The optic overall feels very robust and durable. The glass on this has minimal tint and the dot clarity is on par with my Trijicon RMR HD which was surprising to me. Overall I'd say this is the best RMR footprint red dot in this price range even against Holosun. Also, you get the Primary Arms warranty of anything goes wrong. De...
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Great optic!

by Sean, Verified Owner from SC, United States Written on December 21, 2025
It’s a durable compact little optic that is strong enough to have found its home on my Beretta A300! It’s clear glass and shake awake check all the boxes for a good duty optic!
Would recommend: Yes
Was it helpful to you? Yes | No

Perfect for my Ruger Mark IV

by Ed the Jackle, Verified Owner from PA, United States Written on October 30, 2025
Unlike many red dot sights, this sight is delivered with a Picatinny rail adapter pre installed yet low profile enough for the pistol. Sight has easy to use elevation and windage adjustments.
Pros:
  • value
  • Easy to use & Durable
  • picatinny rail ready
  • varable illumination
Cons:
  • None
Best Used for:
  • pistols
Would recommend: Yes
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No

Great Optic!

by Roadblock, Verified Owner from AL, United States Written on October 27, 2025
I placed the Primary Arms SLx RS-10R red dot optic on my Gen 5 Glock 20 10mm. Optic was easy to install, zero, and is very clear. I have astigmatism and this dot is very clear for me. I've only fired about 100 rounds with it so far but it's maintaining zero and hasn't loosened at all.
Great value optic
Pros:
  • Features & power source options
  • cost & performance
Cons:
  • None for me
Best Used for:
  • rifle
  • handgun
  • shot gun
Would recommend: Yes
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No

Great lil red dot

by Norman, Verified Owner from NC, United States Written on October 22, 2025
Nice red dot mounted it on top of my prism optic and it holds zero well.
Pros:
  • GREAT PRICE
  • nice glass
  • small and compact
Cons:
  • None
Would recommend: Yes
1 of 1 found the following review helpful.
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another solid red dot by primary arms

by john H, Verified Owner from MN, United States Written on September 22, 2025
This is my second pistol red dot from primary arms. Works great. Fits well on my slide, nice and snug.
Would recommend: Yes
3 of 3 found the following review helpful.
Was it helpful to you? Yes | No
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