Vortex Spitfire HD Gen II 3x review
Our verdict: 4.0/5. Good optic, one loud problem. The Spitfire 3x gets the fundamentals right: 9.3 ounces, a wide 37.9 foot field of view at 100 yards, an etched AR-BDC4 reticle that survives a dead battery, twelve brightness settings with two night vision compatible, an enclosed emitter and the Vortex VIP lifetime warranty. Owners like the glass and the build. What holds it back, and what shows up in review after review including from people who recommend it, is eye relief: at 2.6 inches the eye box is unforgiving, and one experienced owner rates it worse than a Nightforce NX8 he returned for the same reason. The record is also thin at 17 reviews, and it now includes a well-documented report of a unit that would not hold zero, which we cover below.
Owners rate it 3.9/5 across 17 reviews on OpticsPlanet, the smallest record in our prism coverage, and the average has slipped since we first published. In stock at around $400. Price and stock verified August 18, 2026; confirm on the retailer page.
How we reviewed it: a research-based review from the retailer specification sheet and the verified owner-review record, read lowest rating first. We read 10 of the 15 written reviews, the critical end, and re-read the record for this update. We have not bench-tested this optic; the score is our editorial opinion and owner ratings are attributed. See how we evaluate.
What it is
A fixed 3x prism sight with a 21 mm objective, built around an etched AR-BDC4 holdover reticle for 5.56. The reticle being etched rather than projected is the whole point of the format: illumination is convenience, and the sight still aims with a flat battery. It runs one CR2032, is waterproof, shockproof and fogproof, adjusts in 1 MOA clicks across a 250 MOA range, and clamps to a Picatinny rail. Weight is 9.3 ounces, which puts it between the 7.95 ounce Primary Arms MicroPrism and the 14.2 ounce Burris AR-332.
What owners like: glass, size and no fuss
The praise is consistent and specific. Owners describe crystal-clear glass, easy tool-free adjustment with positive clicks, and a see-through mount that one 10/22 owner says still lets him use his peep sights underneath. Another calls it tough and says it holds zero, and the auto shut-off gets its own mention. The review the retailer ranks as most helpful positive praises the clarity and the lifetime warranty, though it is worth saying plainly that the writer had just mounted it and had not fired the rifle yet, so we do not treat it as durability evidence.
The honest catch: the eye box
This is the review, really. Reading the record from the lowest ratings up, eye relief dominates. One owner who describes owning many optics from across the price spectrum, including two Vortex products he genuinely likes, writes that he returned a Nightforce NX8 over an eye box he considered sub-par and that this one is far worse. Another, who otherwise rates the optical quality as great and the controls as easy, says the eye relief is a joke: mounted as far back as the rail allowed, he has to choke well forward on the rifle for a clear picture, and plans to move it to a PDW with a shorter stock. A third owner who recommends the sight and praises how tough it is still lists eye relief as his one con.
“Optic quality is great. Controls are easy to use. Windage and elevation clicks are crisp… Eye relief is a joke.”
Verified owner (TX), January 2024, via OpticsPlanet
New since we published: a unit that would not hold zero
When we first wrote this review the criticism was entirely about the eye box, and we said so: not glass, not build. That is no longer the whole story. In August 2026 a verified owner reported a unit that would not hold zero, with shots scattered at 80 yards and adjustments that did not track, and he is returning it. What makes this report worth more than the usual complaint is that he controlled for the obvious alternative: he took the sight off and shot a 1.25 inch five-shot group with the rifle's factory iron sights, which rules out the rifle and the shooter. He is replacing it with a magnifier-and-dot combination.
“It would not hold zero (shots all over the target at 80 yards). Adjustment was inaccurate. Removed the sight and shot a 1.25″ five shot group with factory irons. Not the rifle!”
Mac (CO), verified owner, August 2026, via OpticsPlanet
One report is not a pattern, and we are not going to pretend otherwise: this is a single unit against a record where other owners specifically praise how well it holds zero. Treat it as what it is, evidence that the quality-control floor on this optic is not perfect, on a record thin enough that one bad copy moves the average visibly. It did: the score fell from 4.1 to 3.9 when this review landed. The practical response is not to avoid the sight but to confirm your zero properly before you trust it, and to remember that the Vortex VIP warranty is unconditional and transferable, which is the reason a bad copy costs you time rather than money.
Two smaller cautions. One owner found the reticle so fine that he could not pick it up at first and thought the sight was broken, calling the extra holdover information unusable at that size; that is a single clear source rather than a pattern, but it fits the general point that this is a small optic. Another lists the sight sitting too close to the charging handle and the illumination being too bright at its lower end. And the 1 MOA clicks are coarse if you like to zero precisely.
Trade-offs, plainly
- Eye relief of 2.6 inches with an unforgiving eye box is the dominant owner complaint, raised even by owners who recommend it.
- The reticle is fine enough that one owner could not use the holdover marks.
- 1 MOA adjustment clicks are coarse next to the 0.25 MOA of the Primary Arms MicroPrism.
- Thin record: 17 reviews, so the average is volatile (one August 2026 report of a unit that would not hold zero moved it from 4.1 to 3.9). The 143-review figure that circulates belongs to the Vortex Spitfire family listing, not this product.
- At around $400 it costs well over twice the Burris AR-332, which has a far deeper record.
Key specifications
| Magnification | Fixed 3x |
|---|---|
| Objective | 21 mm |
| Reticle | Etched AR-BDC4, LED red illumination |
| Brightness | 12 settings, 2 night vision compatible |
| Emitter | Enclosed |
| Eye relief | 2.6 in |
| Field of view | 37.9 ft at 100 yds |
| Adjustment | 1 MOA clicks, 250 MOA total range |
| Battery | One CR2032 |
| Build | Waterproof, shockproof, fogproof |
| Size and weight | 3 x 2 x 1.8 in, 9.3 oz |
| Mount | Picatinny |
On the video above: it is the retailer's clip covering the 3x and 5x models together, not a 3x-only demonstration. On awards: none is claimed; "Best Rated Product" is a store label, not a trophy.
Should you buy it, and what else to consider
- Buy it if you want Vortex glass and the VIP warranty in a 3x prism, and your shooting position is consistent enough that a tight eye box will not fight you.
- Want a more forgiving eye box? The Primary Arms SLx 3x MicroPrism has 2.7 to 3 inches of eye relief, a 10.3 mm exit pupil and weighs less.
- Want to spend half as much? The Burris AR-332 is around $170 with 294 owner reviews.
- Need more reach? The Spitfire HD Gen II 5x is the same idea at 5x.
- Comparing everything? See our best prism scope guide.
FAQ
Is the eye relief on the Spitfire HD Gen II 3x really that bad?
It is the dominant theme of the owner record, so treat it as the deciding question rather than a footnote. The specification is 2.6 inches. One owner who says he owns many optics across the price spectrum reports that its eye box is worse than a Nightforce NX8 he had already returned for the same reason. Another mounted it as far back as his rail allowed and still had to crawl forward on the stock for a clear picture, and says he plans to move it to a shorter-stocked PDW. Even owners who recommend the sight list eye relief in their cons.
Spitfire 3x or Spitfire 5x?
Take the 3x if you want one optic that still works up close: it gives 37.9 feet of field of view at 100 yards against 23.3 feet on the 5x, weighs 9.3 ounces against 10.8, and costs slightly less at around $400. Take the 5x if your actual complaint is distance, since 5x is what makes 100 to 200 yard targets readable. Both share the same AR-BDC4 etched reticle, twelve brightness settings, enclosed emitter, CR2032 battery and coarse 1 MOA clicks, and both have a tight eye box.
Does the Spitfire 3x work for astigmatism?
This is one of the better reasons to buy it. The AR-BDC4 reticle is etched into the prism glass rather than projected by an LED, so its shape does not depend on your cornea and it cannot smear into a starburst the way a red dot can. If you have astigmatism and dots look like comets, an etched reticle is the standard fix; our astigmatism guide explains the progression from dimming and green dots to a prism sight. The trade you accept in return is the fixed, unforgiving eye box.
Why is its rating lower than the other prism scopes?
Mostly because of eye relief. Owners consistently praise the optical clarity, the compact size and the Vortex VIP lifetime warranty, and one describes it as tough and reliable at holding zero. The 3.9 out of 5 average comes from repeated one and two star reviews about the eye box, plus one owner who found the reticle too small to use, and since August 2026 one owner whose unit would not hold zero at all and who ruled out the rifle by shooting a 1.25 inch group with irons after removing the sight. Note also that the record is thin at 17 reviews, so each critical review moves the average more than it would on a product with hundreds: that single report took the score from 4.1 to 3.9.
More: best prism scopes · Vortex Spitfire 5x review · best red dot for astigmatism · ACOG clones explained · best red dot for an AR-15.