SureFire G2X Pro review

We have not tested this flashlight. We own none of the products on this site, we have no laboratory, and nothing here is an impression of how it feels in a hand. This review takes every figure SureFire publishes, runs the arithmetic those figures allow, and says what they do and do not commit the company to.

It also corrects us. Until this review, this site recorded the G2X Pro's beam distance, weight and ingress rating as not published, and said in several places that SureFire prints a candela figure and then stops. Re-reading SureFire's own product page on October 6, 2026 showed that was wrong on four counts: the company publishes a 187 m beam distance, a fifty-two-hour low-mode runtime, a 125 g weight and an IPX7 rating. Every page that said otherwise has been corrected in the same change as this one.

That matters more than it sounds, because of what the 187 m figure does. It gives this light two independently published beam numbers that can be checked against each other — and they agree. On the test that runs through this entire site, the G2X Pro passes, and it is the only light outside Streamlight and Maglite that does.

The published specification

Nine figures and one gap. That is a fuller sheet than the reputation suggests, and fuller than this site credited it with for five weeks. It is still short of Streamlight, which publishes a runtime and a candela figure for every mode plus an impact rating, and it is far ahead of Nitecore, Olight and Acebeam, which publish no runtime at all for the lights we cover.

The two beam figures check each other

Eight lights on this site publish both figures and have them agree. Four are Streamlights, three are Maglites, and this is the eighth. Every other maker we cover publishes one of the two, which cannot be checked, or neither.

A low candela-per-lumen number means a wide beam with a soft hotspot and a lot of usable spill. That is a deliberate choice and it is the right one for the job this light is sold for: at the distances where you actually use a hand-held light indoors or across a yard, you want to see the whole scene rather than a bright circle with darkness around it. Throw versus flood covers the trade in full.

Fifty-two hours on low is the figure nobody quotes

The headline is 600 lumens for an hour and a half. The more useful number is 15 lumens for fifty-two hours, and it is the figure this site was previously missing entirely.

Fifty-two hours is more than two full days of continuous light. Fifteen lumens is not much — it is enough to read by, to find a breaker panel, to walk a corridor without becoming night-blind — and that is exactly the output you want when the question has stopped being how far you can see and become how long the light lasts. A two-mode light that publishes both ends of its range is telling you it expects to be used at both ends.

What SureFire does not publish is the capacity of the CR123A cells it ships, so the watt-hour arithmetic this site normally runs cannot be applied here. You can see the hours; you cannot check them against the energy behind them. That is the same gap Streamlight leaves on its SL-B26 pack. How runtime is defined covers the computation where the inputs exist.

Two CR123A primaries, and the ten-year argument

This light runs on two CR123A lithium primaries and nothing else. There is no rechargeable pack, no USB port and no alternative cell format. In 2026 that reads like an omission, and for most buyers it is.

For one specific buyer it is the entire reason to own it. CR123A lithium primaries hold their charge for roughly a decade on a shelf. A light that lives in a drawer, a vehicle or a go-bag and gets touched twice a year is a light whose battery chemistry matters far more than its lumen count — and a sealed rechargeable in that role is a paperweight the one night you need it. This is why the G2X Pro appears on our emergency and home lighting pages as well as the tactical ones.

The honest counterweight is running cost. A light used a couple of hours a week burns through primaries at a rate that makes it an expensive thing to own, and there is no way to opt out of that on this model. If you use a light daily, buy something rechargeable; the arithmetic is not close. Streamlight vs SureFire sets the two power strategies against each other properly.

IPX7, and the rating it does not carry

Under IEC 60529 the digits are read separately, and the X is not a zero — it means no solid-particle test was declared. So IPX7 is a water rating with no dust rating attached: protection against immersion in one meter of water for thirty minutes, and silence on ingress of dust and grit.

For context, the Streamlight ProTac HL-X publishes IP68, where the 6 is dust-tight and the 8 is continuous immersion beyond a meter, plus a 2 m impact rating. The Streamlight PolyTac publishes IPX7 and a 3 m impact rating. The G2X Pro publishes IPX7 and no impact figure at all, which on a light sold substantially on durability is the one conspicuous hole in the sheet. A reputation for surviving drops is not the same as a published drop test, and we are not going to treat it as one.

What the numbers do not contain

People do not buy this light for its specification, and it would be dishonest to review it as though they did. They buy it for the belief that it will work — that the two-mode interface cannot be misconfigured, that the tail switch will not fail, and that the thing will still be functioning in fifteen years.

We have no way to measure that. We have not owned one, we have no failure-rate data, and a reputation is not evidence we can put in a table. What we can say is narrow and real: the interface genuinely is two modes with no programming and no strobe to land on by accident, and every figure the company prints about this light now checks out against every other figure it prints. Those are the parts of the claim that are verifiable, and they are both true.

Who should buy something else

Skip it if you buy on specification. Almost everything in this price region beats it on paper, often by a multiple. The Fenix PD36R Pro publishes 2,800 lumens and 380 m, the Olight Warrior X 4 2,600 lumens and 630 m. See the brightest tactical flashlights.

Skip it if reach is the job. 187 m is short. The Nitecore P30i publishes 1,000 m and the Acebeam L19 1,300 m, both on less output than you might expect, because they concentrate far harder. See best flashlight throwers.

Skip it if you will use it daily. The primaries will cost you more than the light over a few years. A rechargeable duty light with a published per-mode runtime — the Streamlight ProTac HL-X, which also takes CR123A when the pack is flat — does both jobs.

Skip it if you want a published impact rating. Streamlight prints one for every light we cover and SureFire prints none for this one. On the disclosure test this site runs, that is the gap that remains after the corrections above.

The verdict, stated as what it commits to

On published evidence this is a modest light with an unusually honest sheet. Its candela and beam distance reconcile, it publishes a runtime for both of its modes, it states a weight and IPX7, and it runs on cells that will still be charged in ten years. Four checkable facts, and together they describe a light built to be relied on rather than to win a comparison it was never entered in.

It is not bright, it does not throw, it costs real money to feed, and its maker will not tell you how far it can be dropped. Every one of those is visible in the numbers before you spend anything — which is the argument this site exists to make. For the wider category ranked on candela rather than lumens, see tactical flashlights, and for what the word actually means, what makes a flashlight tactical.