Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

Shopping Cart
Sightmark T-3 Magnifier
$172.80 $143.97 Save 17%
View Product
Compare (0)
Most Helpful Positive Review Worth every penny
The Sightmark T-3 provides some nice bang for your bucks. It’s pretty sleek looking while it does its job perfectly. The glass is crystal clear, the 3x magnification is there when you need it, and a simple flip to the side returns you to the red dot or other optic you employ for close contact. Th...
Read More...
Most Helpful Negative Review Couldn't handle a little rain.
I bought this thing as a tester to see if I like magnifiers, and if they would be a practical addition to my rifle setup. I started by mounting this to an airsoft gun (since it gets used more). The image was clear enough, the eye relief was decent, and the mount is good. The problem is the rain. Th...
Read More...
Show
Sort by
Filter by

Great Product

by Penneraz, from AZ, United States Written on September 30, 2025
I purchased this to go along with the Sightmark reflex sight and works perfectly. I highly recommend this.
Would recommend: Yes
Was it helpful to you? Yes | No

sightmark t-3 magnifier

by tim, Verified Owner from GA, United States Written on September 28, 2024
Pretty good magnification but the eye relief could be a bit better
Would recommend: Yes
Was it helpful to you? Yes | No

Decent 3x mag and flip to side, eye box and relief window could be bigger

by foremanjf, Verified Owner from CA, United States Written on April 26, 2024
Decent 3x mag and flip to side, eye box and relief window could be bigger...

Thats the only complaint same as their 3-18x Citadel even their eyebox isnt forgiving which if you had old eyes becomes and ever more important feature.
Would recommend: Yes
Was it helpful to you? Yes | No

Sightmark T-3 Magnifier

by Davis, Verified Owner from FL, United States Written on February 28, 2024
Optics Planet had the best price after reviewing the internet. Reviews were good. Sits behind my Sig Sauer Romeo 5 as a co-witness with good alignment. Have all mounted on a Citadel Boss 25 12 gauge semi auto shot gun. Works great and rock solid.
Pros:
  • Sturdy
Cons:
  • None
Best Used for:
  • My shotgun or on an AR 15 as a co-witness to a red dot
Would recommend: Yes
Was it helpful to you? Yes | No

T3 magnifier Nice!

by AKG247, Verified Owner from PA, United States Written on December 8, 2023
I used it with my red dot. I sighted it in at 100 yards. It stays spon on!
Pros:
  • Do not move after many rounds
  • Did not move after firing many rounds
Cons:
  • The latch sticks out kind of far
Would recommend: Yes
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No

Great optic on a budget

by Jeremy Harter, Verified Owner from TX, United States Written on September 21, 2023
Picked it up for a buddy on his birthday.. on the cheap. Boxed like it was new and I couldn't tell it was a refurb. Great choice to have something while you save for that Juliet. All in all, super satified with tye purchase of this equipment.
Would recommend: Yes
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No

sightmark T-3 magnifier

by mrapp, Verified Owner from MT, United States Written on June 21, 2023
spent my big bucks on SIG stuff but still needed an extra magnifier so I chose this based on the low price alone, it is " OK " but for under $100 you can't go wrong small , a little dark but does ok, flip to side works well no awkward buttons to push QD mount is solid...not the quality of my SIG or Holosun so I us it to train with and really appreciate having the others for my go to. ! all good...no complaints.
Pros:
  • price, QD, good flip to side mount
Cons:
  • glass is a little dark
Best Used for:
  • Training
Would recommend: Yes
Was it helpful to you? Yes | No

Great magnifier optic!!

by A Satisfied customer, Verified Owner from IN, United States Written on September 23, 2022
Works great and looks good. Needed a manifier that flips to the side to complete my build! Also, its reasonable as far as the price. Would love to get something like an eotech but as long as it works and does the job it was designed for, Im good!!
Would recommend: Yes
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No

Good 'nuff

by Clay, Verified Owner from TX, United States Written on October 27, 2021
Field of view is very good at the cost of eye relief. I own an older sightmark magnifier that does the opposite so this one can be a positive for faster target aquisition especially for cost. The QD mount is also a big plus.
Pros:
  • fov
Cons:
  • eye relief
Would recommend: Yes
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No

Great Magnifier

by girlsshoot, from TX, United States Written on July 27, 2021
The magnification on this was truly incredible, and best of all there was no compromise on the clarity. I would absolutely recommend this device; it does its job, is much clearer than you’d expect, and the ability to flip it to the side is awesome. It is a little heavy but not nearly as much as it could be. Don’t think anything bad comes to mind thinking about this magnifier.
Would recommend: Yes
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No
There are no reviews that match your criteria. Would you like to review this product?