Comparing the EOTECH G33 vs G43 comes down to more than which magnifier is newer or smaller. Both deliver fixed 3x magnification, but the G43 has a shorter body, slightly more published eye relief, and a marginally wider field of view. The G33, surprisingly, is lighter when comparing their standard mounted configurations. The EOTECH G45 changes the equation with 5x magnification, at the cost of more weight and a narrower view.
If you’re choosing your first EOTECH magnifier—or deciding whether to replace a G33—this guide compares manufacturer specifications, practical fit considerations, and the tradeoffs that actually affect your purchase. This is a specification-based buying guide, not a claim that we conducted a side-by-side field test.
In this guide
- EOTECH G33 vs G43: The Quick Answer
- EOTECH G33 vs G43 vs G45 Specifications
- EOTECH G33 vs G43: What Actually Changes?
- EOTECH G33 vs G45: Is 5x Worth the Extra Weight?
- EOTECH G43 vs G45: Compact 3x or More Detail at 5x?
- A Closer Look at Each EOTECH Magnifier
- EOTECH With Magnifier Setup: Compatibility and Fit
- STS Mount, No-Mount Option, or EOTECH HHS Bundle?
- Should You Buy a Magnifier or an LPVO Instead?
- Which EOTECH Magnifier Should You Buy?
- Frequently Asked Questions
EOTECH G33 vs G43: The Quick Answer
Choose the G33 if you want a proven, conventional 3x magnifier, have enough room for its longer body, and prefer the lighter mounted option. Choose the G43 if a more compact 3x package is your priority. It is 0.9 inches shorter, but 0.7 ounces heavier with the standard mount, based on EOTECH’s published measurements. Both deliver the same nominal magnification.
Choose the G45 instead if your real priority is a larger 5x image. It is not simply a newer G33 or G43; it solves a different problem.
EOTECH G33 vs G43 vs G45 Specifications
| Specification | EOTECH G33 | EOTECH G43 | EOTECH G45 |
|---|---|---|---|
| Magnification | 3x | 3x | 5x |
| Published length | 4.0 in | 3.1 in | 3.9 in |
| Weight with standard STS mount | 10.6 oz | 11.3 oz | 12.8 oz |
| Published eye relief | 2.2 in | 2.5 in | 2.6 in |
| Published field of view | 7.3° | 7.5° | 4°* |
| Main advantage | Lighter mounted 3x option | Shortest body | More magnification |
| Main tradeoff | Longer body and shorter eye relief | Heavier than G33 despite smaller size | Heaviest and narrowest view |
*Measurements are taken from EOTECH’s current product specification pages and refer to the listed configurations; they are not our measurements. EOTECH’s current G45 product page lists a 4° field of view, although older EOTECH material has listed 4.4°. Verify documentation for the exact product revision if this measurement is decisive. Product length is not the same as the rail space occupied by a mount.
These numbers show why the G33 vs G43 vs G45 comparison isn’t as straightforward as small, medium, and large. The shortest magnifier isn’t the lightest, and the model with the most eye relief isn’t necessarily the most forgiving to look through. Your sight height, available rail space, and viewing position still matter.
EOTECH G33 vs G43: What Actually Changes?
Size and weight: the G43 is shorter, not lighter
The biggest difference in the EOTECH G43 vs G33 decision is body length. EOTECH lists the G43 at 3.1 inches versus 4.0 inches for the G33: a reduction of 0.9 inches, or roughly 23% of the G33’s published length. That can make the G43 appealing if you dislike a long optic arrangement or want a visually compact setup.
However, compactness does not equal lower weight. EOTECH lists the G33 at 10.6 ounces with its STS mounting system and the G43 at 11.3 ounces in the listed mounted configuration. If cutting overall weight matters more than shortening the body, the G33 has the advantage on those published figures.
Also remember that magnifier length and required rail space are different measurements. The actual fit depends on your mount, the holographic sight in front of it, any rear backup sight, and where you need the eyepiece to sit. The shorter G43 is an advantage—not a guarantee of extra usable rail space in every configuration.
Eye relief and field of view
The G43’s listed eye relief is 2.5 inches, compared with 2.2 inches for the G33. It also has a slightly wider specified field of view: 7.5 degrees against 7.3 degrees.
That gives the G43 an advantage on paper, but the eye-relief number tells you only part of the story. Eye relief describes a nominal viewing distance; it doesn’t fully characterize the eye box or how comfortable it will be for your individual head position. The G43’s compact housing also means you must consider how its eyepiece lines up with your preferred viewing position. Don’t assume that a shorter body automatically means an easier sight picture.
Is upgrading from a G33 to a G43 worth it?
Usually only if the smaller body addresses a real preference or fit issue. You aren’t gaining a different magnification level. If you’re already comfortable with a G33, the G43’s length savings and small specification differences may not justify the replacement cost. If you’re buying from scratch and compactness matters, compare complete mounted prices before deciding.
Browse our EOTECH G33 magnifiers and EOTECH G43 magnifiers to compare current configurations.
EOTECH G33 vs G45: Is 5x Worth the Extra Weight?
The G33 vs G45 comparison is fundamentally about magnification. The G33 provides a fixed 3x view; the G45 provides a fixed 5x view. That makes the G45 the meaningful alternative when 3x simply doesn’t provide as much visible target detail as you’d like.
The tradeoff is easier to see in the specifications. The G45 weighs 12.8 ounces with its STS mount, compared with 10.6 ounces for the G33, and its currently listed 4-degree field of view is notably narrower than the G33’s 7.3 degrees. A tighter view can feel less convenient when scanning or acquiring a target, even though the image appears larger.
The G45 also has more published eye relief—2.6 inches versus 2.2 inches—but that alone does not establish a more forgiving eye box. In short, choose the G33 if 3x is enough and you prioritize a lighter, wider-view arrangement. Choose the G45 when additional magnification is the specific reason you’re shopping.
More magnification does not automatically translate to a fixed increase in effective range or accuracy. Target size, light, the underlying sight, and the shooter all affect what is useful.
EOTECH G43 vs G45: Compact 3x or More Detail at 5x?
If you’re weighing the EOTECH G43 vs G45, ask what you want to improve: the physical size of your setup or the amount of magnification. The G43 is only 3.1 inches long and offers a 7.5-degree published field of view. The G45 is 3.9 inches long and delivers 5x magnification with a narrower 4-degree field of view on the current specification sheet.
The G45 is also 1.5 ounces heavier in the published mounted comparison. Its listed eye relief is only 0.1 inch longer than the G43’s, so the deciding factor is much more likely to be 3x versus 5x than that small eye-relief difference.
The G43 makes sense when you want an especially short 3x accessory. The G45 makes sense when the larger image is worth the extra weight and reduced viewing angle. Neither is categorically better.
A Closer Look at Each EOTECH Magnifier
EOTECH G33: The Conventional 3x Choice
The G33 remains a sensible starting point for an EOTECH magnifier comparison. It offers 3x magnification, 2.2 inches of eye relief, and a 7.3-degree field of view. EOTECH lists its weight at 10.6 ounces with the STS mount, or 7.8 ounces without that mounting system—two different configurations that shouldn’t be compared as if they were equivalent.
Its main drawback against the G43 is body length. If that is not a problem for your sight arrangement, the G33 gives you familiar 3x functionality without paying for compactness you may not need.
The G33 is sold in black and tan/FDE-style finishes, with mounted and no-mount options. If you’re searching for an EOTECH G33 FDE, check the manufacturer’s color designation and the exact package before ordering: tan finish does not tell you whether the STS mount is included.
See the G33 with STS mount in black or compare G33 configurations.
EOTECH G43: Compact 3x Without Reducing Magnification
The G43 is EOTECH’s shorter 3x option. Its 3.1-inch published body length is the clear selling point versus the G33, while its 2.5-inch eye relief and 7.5-degree field of view offer modest specification differences in its favor.
That compact form should not be mistaken for a major optical or weight upgrade. It is heavier than the G33 in the compared mounted versions, and both remain fixed 3x magnifiers. The best reason to buy a G43 is that its shorter physical package suits your preferences.
See the G43 with STS mount in black or compare G43 options.
EOTECH G45: The 5x Alternative
The G45 changes what you see more than the G43 does. Its fixed 5x magnification provides a larger image than either 3x model, while the 12.8-ounce STS-equipped weight makes it the heaviest of the three. The tighter published field of view is the principal optical tradeoff.
Remember that this is a fixed 5x magnifier, not a 1–5x variable scope. With the magnifier swung away, you use the unmagnified holographic sight; with it aligned behind the sight, you get 5x. There is no selectable 3x setting on the G45.
See the G45 with STS mount in black or compare G45 options.
EOTECH With Magnifier Setup: Compatibility and Fit
An EOTECH with magnifier setup generally pairs an EOTECH holographic weapon sight (HWS) with a compatible magnifier positioned behind it. EOTECH lists the G33, G43, and G45 as compatible with its HWS models, but that does not mean every sight-and-mount combination uses exactly the same height or spacing.
XPS vs EXPS: Why sight height matters
EOTECH holographic sights are offered at different mounting heights. Its magnifier documentation specifies a 7 mm spacer for HWS models with side buttons or quick-detach levers, such as EXPS-style configurations. For rear-button HWS configurations, such as typical XPS setups, the documentation directs users not to use that spacer. Follow the instructions for the particular sight, magnifier, and mount you’re pairing; aftermarket risers can change the required arrangement.
The EXPS family also places its controls on the side, which can be more convenient when a magnifier sits behind the sight. On an XPS-style rear-button optic, consider how easily you’ll reach those controls.
Rail space, rear sights, and viewing position
Before purchasing, verify that your complete arrangement allows room for the magnifier’s mount, your chosen backup sights, and a comfortable eyepiece position. A shorter optic can simplify packaging, but nominal body dimensions cannot confirm fit on their own. Published eye relief also cannot tell you whether the sight picture will feel comfortable for your individual posture.
For manufacturer guidance, consult the EOTECH product manuals and the specific product’s mounting instructions.
STS Mount, No-Mount Option, or EOTECH HHS Bundle?
STS refers to EOTECH’s switch-to-side mounting configuration. With a compatible STS-equipped package, the magnifier can be moved out of the optical path when you want to use the sight without magnification. A no-mount listing means you’re buying the magnifier without that mounting system; it is not necessarily a complete installed setup.
If you already have an EOTECH HWS, a standalone magnifier package may be the simplest purchase. If you need both a holographic sight and magnifier, compare the components and total price of an EOTECH HHS sight combination against buying them separately. Confirm which HWS, reticle, magnifier, and mount are actually included rather than relying on a package name.
Should You Buy a Magnifier or an LPVO Instead?
A magnifier is appealing when you already prefer a holographic sight at 1x and want to add occasional magnification without replacing the primary optic. An LPVO makes more sense when you want a scope with adjustable magnification between its minimum and maximum settings.
Neither setup should be compared by magnification numbers alone. Consider the complete weight, mounting requirements, price, and the type of viewing experience you want. If you’re also considering a scope, our EOTECH Vudu riflescope guide covers the alternatives.
Which EOTECH Magnifier Should You Buy?
For most shoppers choosing between G33 vs G43, the best answer is the model that fits their desired package and budget. The G33 remains a capable 3x choice with the lighter published mounted weight. The G43 is the option for someone who specifically wants a shorter 3x body. The G45 is worth choosing when 5x magnification is your actual goal and the heavier, narrower-view arrangement is acceptable.
Compare complete packages—not a mounted model against a no-mount listing—and avoid treating a small difference on a specification sheet as a substitute for checking real-world compatibility.
Browse all EOTECH magnifiers at Deerford Defense to review current products, finishes, and package options.
Frequently Asked Questions
Is the EOTECH G43 better than the G33?
Not in every respect. Both are fixed 3x magnifiers. The G43 is shorter and has slightly more published eye relief and field of view, while the G33 is lighter in the compared mounted configurations. The better option depends on which difference matters to you.
Is the G43 lighter than the G33?
No. EOTECH lists 10.6 ounces for the G33 with its STS mount and 11.3 ounces for the G43 in the published mounted configuration. The G43 is shorter, not lighter.
What is the main difference between the EOTECH G33 and G45?
Magnification: the G33 is fixed at 3x, and the G45 is fixed at 5x. The G45 provides a larger image but weighs more and has a narrower published field of view.
Which is better, the EOTECH G43 or G45?
Choose the G43 for a compact 3x option and the G45 if you specifically want a 5x image. They are designed around different tradeoffs rather than a simple good-better-best hierarchy.
Can I use a G33, G43, or G45 with an EOTECH XPS or EXPS?
EOTECH lists these magnifiers as compatible with its HWS lineup. However, the required spacer and mount height depend on the particular sight and configuration. Check the current EOTECH manual and any aftermarket mount instructions before treating the combination as a direct fit.
Is an EOTECH G33 FDE different from the black G33?
The finish is the most obvious difference. EOTECH sells tan and black configurations; compare the exact model and included mount rather than assuming a different color changes the magnification specifications.
Is the EOTECH G45 a variable-power optic?
No. The G45 is fixed at 5x. It can be moved out of the sight picture to use the primary sight without magnification, but it does not offer adjustable intermediate magnification.
Does a no-mount magnifier include an STS mount?
No. A no-mount listing excludes that mounting system. Compare the total cost of the compatible mounting hardware before deciding whether the no-mount configuration is less expensive.
Manufacturer Sources
This guide uses EOTECH’s published specifications and manuals rather than independently measured or field-tested results: