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Primary Arms SLx Rotary Knob 25mm Microdot with ACSS-CQB Red Dot Reticle

Primary Arms SLx Rotary Knob 25mm Microdot with ACSS-CQB Red Dot Reticle

Primary Arms · Sights & Optics

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Best price

$189.99at AR15Discounts

checked Nov 10, 2026

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Where to buy

StorePriceAvailabilityBuyAdd to build
AR15Discounts Best price $189.99checked Nov 10, 2026 Check store Buy at AR15Discounts
Dirty Bird $196.89checked Nov 10, 2026 Check store Buy at Dirty Bird

Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.

Price history

Dashed line = out of stock. Tracking since Oct 28, 2026.

Show the prices as a table
StoreLatestLowestHighest
AR15Discounts$189.99$189.99$189.99
Dirty Bird$196.89$196.89$196.89

Since Oct 28, 2026.

About this part

The Primary Arms SLx Rotary Knob 25mm Microdot with ACSS-CQB Red Dot Reticle is a red dot sight from Primary Arms. It's sold by 2 stores, from $189.99 to $196.89.

Specifications

Manufacturer
Primary Arms
Type
Red Dot
Illuminated
Yes
Magnification
1x
Magnification class
1x (non-magnified)

From the manufacturer

After rigorous field testing, this optic has been given a Silver-tier rating by the National Tactical Officers Association. This rifle scope is part of our SLx optics line. SLx optics built our reputation for innovation, reliability and value. All SLx optics undergo rigorous field-testing during development to best serve you in any environment. The humble microdot is a hard-to-beat package when you want speed without adding a lot of weight to your firearm. The venerable 30mm red dot is a great option for shooters who prefer to have speed AND a wide field of view through their optic. The SLx MD-25 is here to offer the perfect balance between the two with a compact design that weighs barely 2 ounces more than a standard microdot, yet offers the same field of view as a 30mm red dot! Add in super bright, daytime illumination, an up to 50,000-hour battery life, and our next generation ruggedized micro mount and you'll see how we're pushing the envelope for fast, lightweight optics! Features: Wide field of view Compact, lightweight, and durable ACSS CQB Red Dot Reticle Up to 50,000 hour battery life (5+ years) at medium setting Uses one CR2032 battery (included) Next generation ruggedized mounting system Includes risers and spacers for mounting to 0.96", 1.41", 1.54", or 1.64" central height Compatible with standard micro mounts Fully multi-coated anti-reflective lenses 12 Illumination settings for bright days and night vision compatible Just 3" long and 6.5 Oz. Fog resistant The SLx 25mm Red Dot been equipped with our next generation ruggedized mounting system. We've upgraded everything about the mount from materials and finish to the design to create a mount that will not just clamp securely to your rail, but stand up the rigors of real-world use. Integrated recoil lugs help lock your mount in place against the heaviest recoil while large diameter crossbolts give you significantly improved clamping power and will hold up to significant torque. The included riser is the perfect height for AR-15s and AR-10s, but can be easily removed to for installation on AKs, shotguns, and more. The SLx 25mm red dot includes the low base, a standard riser, and two different height spacers, as well as appropriate mounting hardware. With just the low base, a central height of 0.96" can be achieved. Add the standard riser for 1.41". With the riser and thin spacer, your central height will be 1.54". Using the thick spacer will place the optic at 1.64" height. With these options you can easily configure your optic to perfectly match your firearm and shooting style.

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$189.99 at AR15Discounts
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