Vortex has lengthy been one among my go-to makers for high quality optics. Once I moved to carrying pistols with pink dots, I naturally gravitated to Vortex. The brand new Defender ST is a distinct animal from the Defender CCW: it’s bigger, has a taller/wider window, and makes use of a footprint higher suited to full-size pistols, which is welcome if you most frequently carry a Glock 17, 19, or 19X.
Under, I’ll cowl what issues: match and end, controls and battery, night-vision compatibility, mounting and zeroing, the way it shot on the vary, and my verdict.
What it’s — fast abstract
The Defender ST is a compact reflex sight that includes a bigger viewing window than the CCW line, a DeltaPoint-style footprint, a 3 MOA dot choice, a top-loading CR2032 battery, and a variety of user-friendly options, together with a Quick-Rack non-slip cowl and a Shock Protect. Battery life is rated at 25,000 hours at reasonable settings.


What I preferred (and why)
Larger window, higher sight image. The taller/wider window provides a clearer, much less tunneled view for quick goal acquisition on bigger pistols.
Quick-Rack interface & Shock Protect. The quilt encompasses a non-slip floor to be used as a racking interface and an built-in guard to assist forestall influence harm.
Prime-loading battery. Altering the CR2032 is straightforward — you don’t need to take away the sight or re-zero.
Night time-vision modes. Two NV settings put the emitter in an IR vary that gained’t hose your evening imaginative and prescient when used with NV gear.
Good brightness vary. Twelve brightness settings (two NV) allow you to dial the dot in for indoor, outside, and NV use. I examined ten daylight settings and located the vary very usable.
Stable construct and controls. Windage/elevation clicks are optimistic and predictable; every click on is 1 MOA at 100 yards (~1 inch).
What to know concerning the electronics
Vortex advertises a better refresh charge on the Defender ST. Virtually, which means the dot is much less susceptible to perceived blur or starburst throughout fast transitions — a modest however welcome benefit in velocity taking pictures. The sight auto-shuts after ten minutes of inactivity to avoid wasting battery. Brightness at max will cut back the 25,000-hour life ranking, so plan on an annual battery change with common carry/use.
Controls and person interface
Adjustment buttons are positioned on the edges of the housing (easy accessibility, not cramped).
Lockout function: maintain the management button for 3 seconds to lock; repeat to unlock.
Twelve brightness settings, together with two NV infrared settings for night-vision compatibility.
Mounting & footprint
The Defender ST makes use of the DeltaPoint/DP footprint (Vortex provides a Glock MOS plate and a Picatinny mount). I mounted it to a Glock 34 utilizing the provided {hardware} and tightened the screws alternately for even torque. In order for you an excellent stiffer, confirmed plate, contemplate an Athena Precision Glock MOS plate — it’s a premium improve favored by many law-enforcement builds.



Zeroing and point-of-impact issues
I want a 25-yard zero for pistols. With a 25-yard zero, you’ll usually see ≤3 inches deviation between the dot and point-of-impact from 0–25 yards. When you zero at 7 yards, count on about 6 inches of drift at 25 yards. Every click on equals ~1 MOA; zeroing was simple — I began at 10 yards, set vertical first, then windage, and tuned at 25 yards.
Vary take a look at — accuracy & efficiency
I ran fast drills at 7, 10, and 15 yards with Fiocchi 147-gr FMJ and had clear, quick hits on hanging targets. For precision testing, I used Covert X defensive masses from a stable bench relaxation at 25 yards utilizing a Birchwood Casey relaxation: two five-shot teams averaged 2.2 inches. That’s superb for an obligation/carry pistol and demonstrates the red-dot’s advantages for each velocity and absolute accuracy.
Last verdict
The Vortex Defender ST earns a clear invoice of well being. It’s solidly constructed, considerate in options (Quick-Rack, Shock Protect, top-loading battery, NV modes), and it delivers each velocity and accuracy in real-world use. When you run a full-size or obligation pistol and need a bigger viewing window with fashionable ergonomics, the Defender ST is an excellent alternative.
The place To Purchase

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