First Look: Primary Arms SLx RS-10R Sight

Designed to work with the RMR or 407C/507C footprint.

by
posted on August 14, 2025
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Primary Arms

Primary Arms Optics is releasing the new SLx RS-10R Mini Reflex Sight, a red dot sight for pistols which builds on the performance of the RS-10 with expanded compatibility and advanced features. RS-10R is now available and has an MSRP of $209.99.

The SLx RS-10R maintains the value and innovation of the original RS-10 while being compatible with the popular RMR footprint for improved fitment with a wide range of optics-ready slides and mounts. Built from 7075 aluminum, this optic features a 23×19mm multi-coated lens, a side-loading CR1632 battery compartment, and a lightweight design at just 1.1 ounces. With up to 40,000 hours of battery life and motion-sensing AutoLive technology, the RS-10R ensures lasting uptime and power efficiency for concealed carry or duty use.

“When the original SLx RS-10 released, we received a lot of feedback about its footprint,” said Stephen Morgan, Director of Product Marketing at Primary Arms Optics. “By fitting the RMR mounting pattern, we’re giving users more flexibility without compromising on durability or value.”

Primary Arms SLx RS-10R Specifications

  • Battery Life: 25,001 - 50,000 hours
  • Battery Type: CR1632 3V Lithium coin cell
  • Click Value: 1 MOA
  • Color: Black
  • Emitter Type: Open emitter
  • Finish: Hardcoat anodized
  • Material: Aluminum – 7075
  • Mount Compatibility: Holosun 407C/507C, Trijicon RMR
  • Night Vision Compatible: Yes
  • Optic Series: Primary Arms SLx
  • Reticle: 3-MOA dot
  • Reticle Color: Red
  • Warranty: Lifetime
  • Weight: 1.1 ounces

The SLx RS-10R has an MSRP of $209.99 and is available from Primary Arms and authorized Primary Arms Optics dealers. Visit primaryarms.com for more information on this new optic or other products from Primary Arms.

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