Steiner 4-20x50 GS3 Riflescope, Matte Black Finish with 2nd Focal Plane Plex S7 Reticle, 30mm Tube Diameter & Side Parallax Focus

SKU: ST42050GS3R

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Review Summary

2025-10-23T20:00:00

Rated 5 out of 5

Excellent quality binoculars

The sports focus system means that everything is in focus beyond about 20 feet away. For the solo operator, that's a huge convenience that can free up one of your hands for other tasks (like staying warm in a pocket, or handling a firearm) because there's no need to constantly adjust depth of field while glassing.

Nobody U.

2021-11-17T19:00:00

Rated 4 out of 5

Great Depth Perception

Great depth perception. Crisp vision. Independent diopters and auto-focus >20m means I can actually see clearly with my Rx glasses removed. My astigmatism doesn't create issues. Eye lenses frequently fog up - a big disappointment. Wearing a cap with any forward brim makes it worse, so removal can help. 20.5 ounces is a very light weight for the feature set of the T750; however, the provided neoprene strap does a poor job of distributing weight across the neck and shoulders, thus a good harness is necessary for prolonged glassing. The carrying case has belt loops, but hang so loosely on a standard duty belt or most pack attachment systems that it's not that practical to belt carry. I would appreciate some high quality carrying accessories suitable for hard field use of my T750 Bino's.

Houndsong

2020-02-28T19:00:00

Rated 5 out of 5

GS3 4x20x50

Put this GS3 4x20x50 scope (Plex S7 reticle) and Steiner rings on my 7mm Rem Mag Cooper synthetic stainless and it is AWESOME! Love the crystal clear glass and crisp over-hold marks. I've always shot out to 400yds but definitely going to try shooting further now. Very pleased with this scope!

bushcamp2

2019-01-31T19:00:00

Rated 5 out of 5

Have this scope for few months and it's performance is unbelievable very good in all kinds of weather as i hunt in Alberta snow cold and rain are so unpredictable and Steiner is the one that has no problem surviving in kinds of conditions very good glass and fog proof

Kosovar

2019-01-29T19:00:00

Rated 5 out of 5

Awsome Scope

I bought this scope a month ago and it is the best scope i own. Very clear and durable.

Randall W.

2019-01-15T19:00:00

Rated 5 out of 5

World Class Glass

I just spent a full hunting season behind this scope. All I can say is, I have never had more confidence in shooting a rifle. End of story. - Dan Rieves

DanR

2018-02-14T08:30:49

Rated 5 out of 5

I would recommended this scope .

Great piece of glass!i put it on my weather by .270 and after I dialed it in i’ve Shot out to 500 yards so far.

Roy Y.

2018-01-05T19:00:00

Rated 5 out of 5

I love this scope.

I brought a GS3 4-20x50mm and put it on a .270 win 85 Sako hunter stainless with walnut stock, low mount opti lock mounts and I’m absolutely stoked with this set up! It shoots unbelievable and the scope is really clear in low light. I picked the Steiner over the Swarovski because of the 30mm tube, and I’m very happy with my choice, not only is the price better, but the Steiner lets in more light and feels so much more rugged, the swaro feels flimsy and cheap. A friend has a Hawke scope, zoomed into 24 couldn’t see his groupings at 200m, he had a look through my Steiner and the groupings were not only clear as day, but seemed closer even though his Hawke was supposed to be zoomed in closer! Very happy! Only thing i need is a recommendation for a good scope cover for backpack hunting. Cheers! J

JRogers

2017-09-27T20:00:00

Rated 4 out of 5

Pretty good Glass

Only used at the range twice. Site in very quick. 20X great, but cannot always see the holes at 300 yards. Haven't quite figurred out zeroing the turrets yet. So far very happy.

Vinnie D.

Steiner 4-20x50 GS3 Riflescope, 2nd FP Plex S7 Reticle, Side Parallax, 30mm Tube Specifications

  • Magnification

    4x-20x

  • Objective Lens Diameter

    50mm

  • Tube Diameter

    30mm

  • Focal Plane

    2nd

  • Field Of View at 100 Yds (Low/High)

    25.8 / 5.5'

  • Eye Relief (Low/High)

    3.5 - 4.25mm

  • Exit Pupil (Low/High)

    11 - 2.5mm

  • Diopter Adjustment Range

    +2 to -3

  • Reticle

    Steiner Plex S7

  • Illumination Control

    1/4 MOA

  • Windage/Elevation Adjustment Knob

    Resettable zero

  • Windage/Elevation Click Value

    1/4 MOA

  • Windage Range at 100m

    30 MOA

  • Elevation Range at 100m

    64 MOA

  • Parallax/Focus

    Side Adjust

  • Parallax/Focus Range

    164 ft. to Infinity

  • Nitrogen Filled

    Yes

  • Waterproof/Fogproof

    Yes

  • Length

    16.4" / 41.65cm

  • Weight

    28.2 oz / 799.4 g

  • UPC Code

    000381850072

About Steiner 4-20x50 GS3 Riflescope, 2nd FP Plex S7 Reticle, Side Parallax, 30mm Tube

FEATURED REVIEWS

I love this scope.

By JRogers

I brought a GS3 4-20x50mm and put it on a .270 win 85 Sako hunter stainless with walnut stock, low mount opti lock mounts and I’m absolutely stoked with this set up! It shoots unbelievable and the scope is really clear in low light. I picked the Steiner over the Swarovski because of the 30mm tube, and I’m very happy with my choice, not only is the price better, but the Steiner lets in more light and feels so much more rugged, the swaro feels flimsy and cheap. A friend has a Hawke scope, zoo...

View full Review

By Kosovar

Have this scope for few months and it's performance is unbelievable very good in all kinds of weather as i hunt in Alberta snow cold and rain are so unpredictable and Steiner is the one that has no problem surviving in kinds of conditions very good glass and fog proof

The Steiner GS3 4-20x50 Riflescope 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 of course, Steiner's bedrock reliability will always deliver unfailing performance, whatever firearm or target you prefer. Its features are versatile enough for prairie dogs, big game or the bean field.

Steiner Heritage Warranty
• Repair or replace your Steiner optic should it become damaged or defective -at no charge.
• No warranty card needed
• No receipt required
• Fully transferable - from generation to generation

Steiner 4-20x50 GS3 Riflescope, 2nd FP Plex S7 Reticle, Side Parallax, 30mm Tube 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 S7 Reticles help determine holdover for distance and cascading dots/lines compensate for wind
  • 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
  • Waterproof/Fogproof durable construction you can trust to stand up to any cold or wet condition

Key Features

  • New 5x Zoom Range provides sharp resolution at long distances for more accurate shooting for wide open areas
  • Steiner Plex S7 Reticles help determine holdover for distance & cascading dots/lines compensate for wind
  • 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 & durability
  • Waterproof/Fogproof durable construction you can trust to stand up to any cold or wet condition

What's in the box:

  • Heritage Warranty
  • Caps
  • Instructions
  • Steiner Lifetime Transferrable Heritage Warranty