Primary Arms SLx 1-10x28 SFP Rifle Scope - Illuminated ACSS Griffin M10S Reticle

Manufactured by Primary Arms
MPN: 610156
Manufactured by Primary Arms
3 Reviews

In Stock

Get Bonus Bucks of $112 within 3 days of product shipping
$112 - Bonus Bucks will be emailed within 3 business days of product shipping. Please click here for more details

Standard orders will ship out in 1 business day (M-F) if ordered by 3:30 pm CST. FFL orders will ship within 5 business days or less as long as we have the information for the transfer destination. NFA items will take longer to ship and are dependent upon ATF processing times.

Receive FREE shipping on your entire order when you purchase this item.
For individual Officer, First Responder, and Military pricing please make sure you are logged in. for details



This Primary Arms rifle scope is part of the SLx optics line. SLx optics built their reputation for innovation, reliability, and value. All SLx optics undergo rigorous field-testing during development to best serve you in any environment.

The Primary Arms SLx 1-10x28 Rifle Scope takes what is popular about low power variable optics and steps it up a notch to a larger magnification range without making sacrifices common with more traditional 10x optics. The first true 1-10x LPVO boasts a generous 3.2 - 3.5 inches of eye relief allowing you to easily set this scope up on your rifle of choice and still features a great field of view throughout the magnification range. With the addition of an integrated magnification lever, you can quickly and easily go from a true 1x sight picture all the way up to 10x magnification for those longer distance precision shots or simply for better target identification. This is truly a versatile optic that can do it all from close quarters to long range while still only weighing 19.1 ounces at 10.5 inches long. Just like the other optics, this scope is protected by the Primary Arms Lifetime Warranty. If a defect due to materials or workmanship, or even normal wear and tear, has caused your product to malfunction, Primary Arms will either repair or replace your product.

  • Second focal plane ACSS Griffin M10S reticle
  • M10S Reticle optimized for second focal plane design
  • Integrated magnification lever
  • 11 Illumination settings with 2 NV settings
  • Daylight visible illumination
  • Partial illuminated horseshoe and chevron aiming point
  • 1-10x magnification range
  • 28mm objective lens
  • 3.2 - 3.5 inches of eye relief
  • 34mm Tube diameter
  • High strength one-piece 6061-T6 aluminum body
  • Black hardcoat anodized
  • Only 10.5" long and weighs 19.1 oz.
  • Tested and proven for durability with extensive live fire testing
  • Backed by an industry-leading Lifetime Warranty

The ACSS Griffin MIL M10-S is an all-new SFP reticle that is purpose-made for optics with a 1-10x magnification range. In close quarters, the ACSS Griffin MIL M10-S offers a bold horseshoe with a chevron tip. For long-range precision, users can leverage the full functionality of their ACSS reticle. The ACSS Griffin MIL M10-S integrates an intuitive MIL grid and both vertical and horizontal ranging stadia for quick range estimation and target engagement. Check out the manual below for a deep dive into all the functionality of this reticle.
See More


Battery TypeCR2032 3V Lithium Coin
BrandPrimary Arms
Click Value.5 MOA
Exit Pupil DiameterLow: 9mm / High: 2.8mm
Eye ReliefLow: 3.2 in / High: 3.5 in
Field View 100Low: 110 ft / High: 10 ft
Focal PlaneSecond Focal Plane
IlluminatedPartial Illumination
Length10.5 in.
Magnification1X - 10X
Night Vision CompatibleNight Vision Compatible
Objective Diameter28mm
Optic SeriesSLx
ReticleACSS Griffin M10S
Reticle ColorRed
Reticle TypeMRAD
Total Elevation Adjustment40 MOA
Total Windage Adjustment40 MOA
Tube Diameter34mm
Turret Features
Weight19.1 oz.

Ratings & Reviews

3 reviews


Great scope

by -

Great SFP scope and ACSS reticle, easy to view day or night, and standard mil marks are highly desireable since typical BDC reticles are calibrated for one specific load. It is better to learn the charateristics for the caliber(s) and load(s) one intends to use.
The 34mm PEPR style mount selection is somewhat limited but picked one up from Midway. The lever on the magnification ring is very useful and should be standard on all scopes. Heavier than a reddot and 6x magnifier but clarity and additional magnification makes up for the difference.

Great optics

by -

Good Optics you’re very clear lenses with decent price

Not suitable for extended ranges

by -

Under 250m, this is an excellent scope, not enough discernible difference to justify a scope 2-3x the cost if that’s all you’ll shoot. Past 300m, this scope gets blurry and low light transmission is pretty bad. This is on 12”x12” steel, I could make out 400m and 500m and get hits, but wasn’t clear enough to see hits (I had a spotter verify) or even movement. Past 500m forget it on that size of target. You can dial down to get better clarity, but since it’s SFP, the grid and BDC are no longer applicable. Another thing to consider, this scope is BIG, the windage turret partially blocked my T-1 offset on a larue mount which I didn’t like. In the end, I wish I had spring for the GLX and failed to read the return policy of once you mount it, no returns :(
Hope this helps someone!

I was happy to speak to you on this issue and clarify our return policy on PA branded optics. We will have those emails out to you asap.