Sightmark T-3 Magnifier

Designed to mount directly behind a reflex sight or red dot, the versatile Sightmark T-3 Magnifier allows a quick and easy way to magnify your sight picture by 3x and provides an absolute co-witness. A straight tube magnifier a full .8” shorter than the model it replaces, the T-3 features a streamlined, low drag design, preventing the magnifier from snagging on equipment in important situations. Ideal for engagements up to 100 yards, if a close range shooting scenario calls for no magnification, simply use the T-3’s flip to side mount to rapidly transition between the optic systems.

This durable magnifier is constructed of aluminum and provides improved brightness and resolution from fully multi coated optics. External windage and elevation adjustments align the reticle to the center of the T-3’s point of view. EOTech and Aimpoint compatible, the locking quick detach mount found on the T-3 lets the magnifier be quickly removed. Sightmark T-3 Magnifiers include flip to side LQD mount, adjustment tools and manual.

Sightmark T-3 Magnifier Features

Locking, quick detach mount for quick and easy removal

Flip to side mount provides rapid transition between optical systems

Fully multi coated, scratch resistant

External windage/elevation adjustment for reticle alignment

Increases magnification of accompanying sights for greater engagement range

EOTech and Aimpoint compatible

Product Manual

Spec Sheet


Magnification 3x
Diameter, Objective Lens 23 mm
Diameter, Eyepiece 1.26 in


Diameter, Exit Pupil 7.6 mm
Eye Relief (in/mm) 2.25 in


Field of View, m@100m 14.43
Field of View, ft@100yd 43.3
Diopter Adjustment +3 to -3
Diameter, Tube 30 mm
Maximum Recoil .308 Caliber
Shockproof Yes
Fog Proof No
IP Rating (waterproof) IP55 – water resistant
Finish/Color Matte black
Body Material Aluminum
Lens Coating Full Multi-coated
Mount Type Picatinny
Operating Temperature, F/C -22 to 160F

(-30 to 71C)

Length (in/mm) 4 in

(103 mm)

Width (in/mm) 2.6 in

(66.2 mm)

Height (in/mm) 1.67 in

(42.5 mm)

Weight, oz 10.6 oz.



More from Sightmark

Additional information

Weight 0.66 lbs