GS3 2-10x42

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  • Steiner Plex S1 Reticle
  • Steiner 4A Reticle

The new Steiner GS3 “game sensing” scope utilizes exclusive CAT (color adjusted transmission) lens coatings to amplify contrast in the peak human vision sensitivity range. The optimized contrast effectively separates game from leafy or shadow-dappled backgrounds, exposing your target to a clean, accurate shot. And the GS3 5x zoom range lets hunters from eastern whitetail country to western big game ranges pair their new scope with their favorite centerfire, rimfire or muzzleloader rifle. And or course, Steiner’s bedrock reliability will always deliver unfailing performance, whatever firearm or target you prefer.

Offers a wide field of view making it easier to find your target.

Included Accessories: Battery, Lens Cloth, Lens Cover

  • Magnification 2x-10x
  • Tube Diameter 30mm
  • Length 13.5
  • Weight 18 oz
  • Item no. 5004 - S-1 Reticle
  • Item no. 5009 - 4A Reticle



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Product Features: 

New 5x Zoom Range

provides sharp resolution at long distances for more accurate shooting for wide open areas.


CAT™ Color Adjusted Transmission

amplifies contrast in the peak human vision sensitivity range, to spot game in any environment.


Steiner Plex S1 Reticle

help determine holdover for distance and cascading dots/lines compensate for wind.


Steiner 4A Reticle

provides a simple, uncluttered aiming tool


Short Mounting Length

of just 5.4 inches for mounting on short actions, muzzleloaders or lightweight mountain rifles.


Rugged 30mm Tube

milled from solid aluminum stock so there are no welds or seams, for greater strength and durability.



durable construction you can trust to stand up to any cold or wet condition.


Item No.MagnificationReticleObjective LensFocal PlaneTube DiameterSpecial FeatureField of View at 100 meters
50042-10 xPlex S142 mm2nd30 mmCAT™ Color Adjusted Transmission Coatings10.5-52 ft at 100 yds
Focal Plane2nd
Tube Diameter30 mm
Special FeatureCAT™ Color Adjusted Transmission Coatings
Objective Lens42 mm
Field of View at 100 meters10.5-52 ft at 100 yds
Eye Relief3.5 to 4.3 in
Exit Pupil4.2 - 12 mm
Length13.5 in.
Weight18 oz.
Diopter Adjustment Range-3 to +2 dpt
Elevation Adjustment KnobResettable Zero
Illumination ControlNon-Illuminated
Wind/Elevation Click Value1/4 MOA
Elevation Range at 100 m.70 MOA
Wind Range at 100 m.70 MOA
Parallax/Focus Range328 ft.
Nitrogen FilledYes
Operating Temperature Range-13 to +145 Fahrenheit
WarrantyHeritage Warranty
50092-10xSteiner 4A42 mm2nd30 mmCAT™ Color Adjusted Transmission Coatings52.0 - 10.5
Focal Plane2nd
Tube Diameter30 mm
Special FeatureCAT™ Color Adjusted Transmission Coatings
Objective Lens42 mm
Field of View at 100 meters52.0 - 10.5
Eye Relief3.5 - 4.3 in.
Exit Pupil12.0 - 4.2 mm
Length13.5 in.
Diopter Adjustment Range+2 to -3
Elevation Adjustment KnobResettable Zero
Wind/Elevation Click Value1/4 MOA
Elevation Range at 100 m.70 MOA
Wind Range at 100 m.70 MOA
Parallax/Focus Range328 ft
Nitrogen FilledYes
Special FeaturesCAT™ Color Adjusted Transmission Coatings
WarrantyHeritage Warranty

GS3 2-10x42 is rated 4.9 out of 5 by 27.
Rated 4 out of 5 by from Built like a tank. Just bought the scope, very happy. The glass is 1st class and extemely clear, along the same quality of other similar priced euro scopes. What really stands out is the build quality, this thing is built like a tank and finished beautifully. I could have bought other more expensive scopes, but I felt like the Steiner could stand the harsh conditions of the sw pacific. Ballistic plex was a great idea, simple to adopt and innovative. I would bet that this will be copied by other manufacturers. The only thing that rattled my cage was the fact that no scope cover was included considering the cost.
Date published: 2014-08-23
Rated 5 out of 5 by from Incredible Scope I cannot even begin to explain the quality of my Steiner riflescope. I’ve owned low end scopes from day one, e.g. Tasco and Bushnell. Recently, took the advice from a friend and started purchasing better quality scopes. My first attempt was a Nikon, I returned it after I noticed the plastic turret covers were stripping. Since, I bought two are Burris Fullfield E1. This Steiner is the next jump up, great optics and hardware! During my first outing, I compared it to a friend’s Leupold VX-2 Gold series, a night and day difference. Instead of saying your VX is a poor attempt at optics, I stated try shooting my rifle. I hope that it swayed him. He’s a great rifle and average scope.
Date published: 2015-12-21
Rated 5 out of 5 by from Bought this scope when they first came out. I can't say enough good about it. It's a very robust scope. Only wish it were available in a little higher magnification. Such as 3/12. Love the 42mm objective on my hunting rifles.
Date published: 2014-09-04
Rated 5 out of 5 by from Excellent glass! I own a couple of these Steiner scopes. They are as good as it gets for target shooting and deer hunting. Optics are very bright and clear. They are very solid and there's no change of zero under heavy use even on my 375 h&h. Like them so much I'm ordering the 3rd one for my new 7mm rem mag custom rifle. These scopes as well as everything Steiner builds are top notch. Try one and I'm sure you will agree.
Date published: 2015-12-08
Rated 5 out of 5 by from An Excellent Scope! I purchased a Steiner GS3 2-10x42 scope for my Sako 85 Bavarian Carbine in .308 Winchester. I owned a pair of Steiner binoculars years ago in the eighties, but this was my first Steiner scope purchase. Well, after mounting it and using it at the range, I can't tell you how glad I am I chose it! The glass is crystal clear offering outstanding clarity. The turret adjustments are finely calibrated and spot on which made the sight-in process a breeze. I opted for the simple to use and uncluttered view of the 4A reticle which I am familiar with much prefer. I have to say that looking through this Steiner scope gives me the confidence to believe I will have a successful hunt on any occasion my quarry gives me a fair chance in taking it. Thank you Steiner for providing world class optics at very reasonable prices.
Date published: 2019-09-17
Rated 5 out of 5 by from Perfect Perfect range of magnification, 2.5-10, for my purposes. Forgiving eye relief for fast acquisition with brilliant full field clarity. The S1 reticle is straight forward and useful. I really appreciated the included reticle application chart for the various calibers. Everything I needed with nothing I didn't need. Perfect.
Date published: 2016-01-09
Rated 5 out of 5 by from Great product, very clear Great low light level scope, very clear, crisp, and good looking matte finish.
Date published: 2015-03-31
Rated 5 out of 5 by from Really great scope. Super clear optics. The Steiner GS3 2-10x42 is a fantastic scope, especially for the price. It compares to my buddy's Swarovski, Kahles, and Leica scopes, but is less than half the price. It is even better than my Leupold VX-6 (2-12x42), as the glass is clearer with better light transmission. I really like the 2-10 magnification range on my Browning BAR .308. I hunt deer and hogs in both thick timber and open country, so this scope is perfect for this rifle. I got the 4A reticle, not the S-1. The S-1 reticle is not really practical for us .30 caliber shooters, as the hash marks are based on .22-250 ballistics. I paid more for the 4A reticle version, but it was worth it for the type of shooting I do. It is physically a big scope, but I think that contributes to its quality and function. It weighs comparable to similar scope in that class, too. The 30mm tube is nice as well. I would highly recommend this scope or any of the GS3 models. It's really an incredible scope for the price.
Date published: 2016-02-24
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What is the little "plug" that sticks out at a 45 degree angle left side center below the turrets?

Asked by: Don B
Hello, That is a posi skirt. It is very similar to the old school posi Lock that some scopes use. It helps the scope hold zero under very heavy recoil. It is a passive system, and requires no adjustment from the user.
Answered by: Steiner Tech Support
Date published: 2023-01-08

Is that small knob on the GS3 2-10x42 below the turrets for parallax adjustment ?

Asked by: Mescal Mike
No, that is a posi skirt. It aids the scope in holding up against extreme recoil.
Answered by: Steiner Tech Support
Date published: 2017-07-13

what are the actual subtensions of the stadia in the S1 reticle (in moa or mil)?

Asked by: Mack
1.6, 4.3, 7.2, 10.5 MOA ^This is per a Burris tech support guy.
Answered by: Mack
Date published: 2016-05-11

What is the eye relieve or the distance your eye is from the scope, 5004 model

Asked by: antiqueearl
Field of View at 100 yds 52.0 - 10.5 Eye Relief 3.5 - 4.3 in. Exit Pupil 12.0 - 4.2 mm Length 13.5 in. Weight 18 oz. Diopter Adjustment Range +2 to -3 Elevation Adjustment Knob Resettable Zero Wind/Elevation Click Value 1/4 MOA Elevation Range at 100 m. 70 MOA Wind Range at 100 m. 70 MOA Parallax/Focus Fixed Parallax/Focus Range 328 ft. Nitrogen Filled Yes Waterproof/Fogproof Yes Warranty Heritage Warranty
Answered by: Steiner Tech Support
Date published: 2019-03-12

Does the Steiner GS3 series of riflescopes have Nano Protection on the exterior lenses ?

Asked by: Yellowstone Explorer 7
The GS3 scopes do incorporate nano coating on the lenses.
Answered by: Steiner Optics JL
Date published: 2017-08-24

Can you tell me where the reticle is fitted is it in the first focal plane or the second as I don't want a scope that makes the reticle bigger as you increase the magnification

Asked by: Tackleberry
Hello, The GS3 line of scopes are all rear focal plane, so the reticle will not appear to grow or shrink at all.
Answered by: Steiner Tech Support
Date published: 2020-02-10

I bought the steiner 2 _10 riflescope and would like to order rings ( as short as possible) to mount this to a picatany rail. What ring height do I need? 

Asked by: stone
You will need medium rings.
Answered by: SteinerCustomerService
Date published: 2016-08-06

What is the country of origin for the glass used in the GS3 2-10x42?

Asked by: Scopie
Answered by: Steiner Tech Support
Date published: 2020-06-27
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