Search  for anything...

Primary Arms SLX Advanced Rotary Knob Compact Red Dot Sight

  • Based on 96 reviews
Condition: New
Checking for product changes
$129.99 Why this price?

Buy Now, Pay Later


As low as $21.67 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: Only 3 left in stock, order soon!
Fulfilled by Primary Arms

Arrives Tuesday, May 27
Order within 3 hours and 30 minutes
Available payment plans shown during checkout

Features

  • Angled front lens designed to reflect the crisp 2 MOA dot projected by the emitter into the eye of the user
  • 11 illumination settings with approx. 50,000 hour battery life (5+ years) at a medium brightness setting
  • Includes removable Picatinny rail mount for out of the box use and bikini lens covers for glass protection
  • 6061 aluminum housing, durable black anodized finish and aluminum turret caps that tighten around O-rings for protection from water and fog
  • Lifetime warranty for manufacturer defects, materials and workmanship, and even normal wear and tear

Brand: Primary Arms


Color: Black


Style: Red Dot Sight


Sport: Airsoft, Tactical & Military


Item Weight: 157 Grams


Material: Aluminum


Magnification Minimum: 1 x


Compatible Devices: Firearm, Airsoft Gun, Tactical Equipment


Mounting Type: Picatinny Mount


Night vision: Yes


Brand: ‎Primary Arms


Color: ‎Black


Style: ‎Red Dot Sight


Sport: ‎Airsoft, Tactical & Military


Item Weight: ‎157 Grams


Material: ‎Aluminum


Magnification Minimum: ‎1 x


Compatible Devices: ‎Firearm, Airsoft Gun, Tactical Equipment


Mounting Type: ‎Picatinny Mount


Night vision: ‎Yes


Model Name: ‎SLx


Manufacturer: ‎Primary Arms


UPC: ‎818500011927


Item Package Dimensions L x W x H: ‎4.88 x 3.62 x 3.31 inches


Package Weight: ‎0.23 Kilograms


Brand Name: ‎Primary Arms


Warranty Description: ‎Limited Lifetime


Suggested Users: ‎unisex-adult


Part Number: ‎MD-RB-AD


Date First Available: November 17, 2017


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, May 27

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Lifetime warranty and it appears to be a very good quality scope
Color: Black
That being said, the dot seems clear, I can't really say a lot about it yet because I haven't gotten a chance to try it out yet But I will update my review if there are any problems and since it has a lifetime warranty I have plenty of time if something isn't right with it, I bought it for myself for Christmas and I was ready to use it day one but it hasn't happened yet. .. I used a bore sighter to zero it in and it wasn't hard to do, in other words that aspect of it worked fine for me no problem... I like it a lot.. and without spending hundreds of dollars and reading a lot of reviews on multiple scopes on multiple sites even regarding the same scopes this one seemed To Me like a real good worry free buy . ... show more
Reviewed in the United States on January 3, 2019 by SECRET SHOPPER

  • These are the Best Red Dots for the money 50,000 hour battery life!
Color: Black
These Red Dots have a Lifetime Warranty ,....50,000 hours battery life,I have them on ALL MY rifles,ar15 pistols.They are plenty accurate to 300 meters! I'm sure further ,but I haven't shot them past 300 meters.
Reviewed in the United States on December 23, 2022 by johnw.

  • Impressive, most Impressive!
Color: Black
This is so far a very impressive red dot, great price point, you can see the higher quality you get for the little extra you do pay for this come pared to Vortex, Bushnell, T1/T2 etc. This has held up well on the AK.
Reviewed in the United States on June 3, 2018 by Jesse

  • Bad batch?
Color: Black
This recent one I received has a “loose” adjustment knob. When firing on my ak the adjustment knob moved between settings thus causing the dot to disappear. I have another one of this that works perfectly and has a very tight knob which functioned flawless. Although it is older and production. Maybe they had a bad batch? Idk, I’m waiting to hear if this can be fixed by PA as this cannot be trusted on any serious firearm. Will update rating depending on resolution. ... show more
Reviewed in the United States on January 21, 2019 by Kevin Mendoza

  • Unbeatable battery life
Color: Black
Purchased this in February of 2018. It’s been set on brightness level 3 since then and has not been turned off. Dot is still bright and crisp and has held up well in subzero winter temps and 100+ degree summer days. I paired it with an ADM lower 1/3 QD mount and I can take it off and put it on without any shift in zero. Definitely a good buy if you don’t want to pony up $600 for a T2. ... show more
Reviewed in the United States on July 10, 2019 by Konstantin Schonbachler Konstantin Schonbachler

  • Good battery life and decent value .
Color: Black
Nice addition to my crossbow . Be aware there is some internal flaring depending on the ambirnt light but the sight is still usable .
Reviewed in the United States on October 11, 2019 by michael beck

  • Coarse adjustments, 1 click = 1 MOA
Color: Black
Adjustments are too coarse. One click = 1 MOA. Previous Primary Arms sights were 1 click = 1/2 MOA. This change is not listed anywhere on the product descriptions.
Reviewed in the United States on March 14, 2018 by Thomas F. Beauchamp

  • Holds zero
Color: Black
I have two of these, one on a 357 magnum lever action rifle and the other on a Ruger PC Carbine 9mm. Obviously, I liked the first one so much that I bought a second one. It is small enough to not look out of place on a sleek rifle like a lever action. The 2 MOA dot is big enough to see without covering too much of the target. Accuracy has been good and both have held zero. ... show more
Reviewed in the United States on September 28, 2018 by Michael Salles

Can't find a product?

Find it on Amazon first, then paste the link below.