GS3 3-15x50

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  • Steiner Plex S1 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.

For low light performance that mounts on most rifles without extra-high rings

  • Magnification 3x-15x
  • Tube Diameter 30mm
  • Length 14.1
  • Weight 24 oz
  • Item no. 5005 - Plex S-1 Reticle



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Product Comparisons

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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 yds
50053-15xSteiner Plex S150 mm2nd30 mmCAT™ Color Adjusted Transmission Coatings36.0 - 7.5
Focal Plane2nd
Tube Diameter30 mm
Special FeatureCAT™ Color Adjusted Transmission Coatings
Objective Lens50 mm
Field of View at 100 yds36.0 - 7.5
Eye Relief3.5 - 4.3 in.
Exit Pupil11.0 - 3.5 mm
Length14.1 in.
Weight24 oz.
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
WarrantyHeritage Warranty

GS3 3-15x50 is rated 5.0 out of 5 by 5.
Rated 5 out of 5 by from Excellent adjustments to sight-in riffle Bought this scope not sure how good it would be. I thought it was a bit heavy but looked like it was built like a tank (tough). I have had Bushnell, Vortex, Redfield and Leupold VXR, hands down, this scope is awesome. I sighted in my riffle and it took 2 bullets; I shot 4 inches high and 1 inch left, I counted the clicks on the scope, 16 clicks low and 4 clicks right... where did the 2nd bullet hit?, right in the BULLSEYE. I have never had a scope do that, I've never had one that was exactly 1/4 inch per click, it made my friend foam at the mouth with his $1200 Leupold, lol. Only thing I wish for is lens caps which I think should be included in the price. I definitely would buy a Steiner again.
Date published: 2016-05-02
Rated 5 out of 5 by from 3-12 x 56 Bought this scope & mounted it on Winchester SX-AR great scope & great price!! This is my third Steiner scope that I own.
Date published: 2014-08-05
Rated 5 out of 5 by from The GS3 is an outstanding scope. Today, I bought my second GS3 Scope. My first, I bought last year prior to deer season and put in on my "working gun" a 7 Mag. I have bounced the gun around in a jeep, carried it through rain storms, fell over in the stand the other day and it is still on. The view is clear and crisp. I have had a lot of scopes over the years but this scope is the best of the best.
Date published: 2015-11-09
Rated 5 out of 5 by from Great Optics I received this scope on a raffle rifle. I knew very little about scopes but thought it should be very good. I was wrong. It is excellent! After correcting mounting errors I found it easy to zero and the optical quality is outstanding. I can definitely recommend it.
Date published: 2016-03-25
Rated 5 out of 5 by from Love the simplicity of this scope ,very clear . Best scope to date I've ever purchased .Thank you for producing a great product !
Date published: 2015-08-18
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What height rings would I need mounting on a rail? Any recommendations?

Asked by: montana mark
You'll want High rings. I'd recommend Burris Signature rings.
Answered by: SteinerOptics3
Date published: 2016-08-15

Do the scopes come in silver?  I have a stainless model 70 Winchester.

Asked by: RPG58
They do not.
Answered by: Steiner Tech Support
Date published: 2018-01-30

What clothing brand is the hunter in the picture wearing? And the pack on his back?

Asked by: John24
The brand is Kiui.
Answered by: SteinerCustomerService
Date published: 2015-05-13

Could it happen that GS3 3-15x50 with S1 reticle might not withstand a recoil mounted on Sauer 202 with .308 caliber. It doesn’t hold zero. It was purchased in Canada, and there’s no “Made in Germany” logo on the tube. Is it some cheaper version?

Asked by: Renat
Hello, All of our optics will hold up to far beyond .308. If you need assistance please visit the links below: For warranty or repairs please visit:
Answered by: Steiner Tech Support
Date published: 2018-09-10

Why did Steiner fail to manufacture this scope w/o parallax adjustment? Doesn't parallax become more of an issue at magnifications greater than 12x? Few, if any manufacturers build a 15x or greater scope w/o parallax adjustment.

Asked by: Dyno
The GS3 3-15x was intended for use as a big-game scope, not a varminter, making a parallax adjustment unnecessary. A parallax adjustment is critical for small targets like varmints at long range, but not as much for big-game with large vital zones.
Answered by: SteinerOptics3
Date published: 2018-02-16

I'm looking to put a gs3 3-15x50 on my steyr ssg69, I have the steyr picatinny rail, I was wondering what height of rings I should get?

Asked by: Welder84
I would recommend Medium.
Answered by: Steiner Tech Support
Date published: 2018-04-20

Can the 3-15x50 GS3 mount low on a Sauer 101 Classic? I know this scope has less tube for mounting up front, and the 101 takes a long action base. I'm looking to keep the mounting fairly low and have proper clearance and eye relief.

Asked by: josh29
There's really no way to be sure without knowing the measurement of the barrel taper to the top of the base at the point where the objective bell is widest, with relation to where it will be mounted on the receiver. For 50mm bells, we typically recommend High rings as a starting point.
Answered by: SteinerOptics3
Date published: 2016-09-07

Is this scope first or second focal plane

Asked by: 3knot
It is rear focal plane.
Answered by: SteinerCustomerService
Date published: 2015-09-04
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