RFX1 or Pebble? Picking the Right Red Dot for Your S&W Bodyguard 2.0

The Bodyguard 2.0 shipped with a factory rear notch that a lot of owners describe as wide and slow to align — fine for a backup gun you rarely shoot, less fine if this is your primary EDC and you're trying to put rounds on target fast. That's the gap both Viridian and Gideon Optics built these sights to close. Neither company adapted a sight designed for a different gun; both engineered a dovetail-specific mount for this exact pistol, which is why you'll see both recommended as the go-to optics for the platform.

If you're trying to decide between them, the good news is you can't really go wrong on core function.

What the RFX1 and Pebble have in common

Start with what doesn't change between them, because it's most of the decision that people worry about and don't need to:

Both are direct dovetail mounts that replace the factory rear sight — no optic cut, no adapter plate, no slide milling. Both run a 3 MOA dot reticle sized for fast target acquisition at defensive distances. Both use a CR1632 battery, and both are motion-activated, so the sight wakes when you draw and sleeps when the gun sits still. Both carry a lifetime warranty from the manufacturer. And both are priced close enough at the entry tier — roughly $200 — that price alone shouldn't be the deciding factor unless you're looking at the enclosed-emitter Pebble E.

Installation is the one place both share a caveat: the Bodyguard 2.0's dovetail is a tight press fit, and swapping the factory rear sight for either optic typically requires some attention to detail. Budget for that either way, unless you go the factory-installed RFX1 route covered below.

Where they actually differ

Weight: sub-ounce vs. not quite

This is the starkest number on the spec sheet. The RFX1 weighs 0.53 oz — genuinely one of the lightest reflex sights on the market and barely more than the battery it runs on. The standard Pebble weighs 0.84 oz, and the enclosed Pebble E weighs 1.16 oz. On a full-size pistol, none of this would register. On a micro .380 you're carrying specifically because it disappears in a pocket or rides flat at the appendix, an extra half-ounce is small in absolute terms but not nothing relative to the gun itself.

Brightness: automatic vs. manual control

The RFX1 uses Viridian's INSTANT-ON system paired with an ambient light sensor — brightness adjusts on its own as you move between a dim room and direct sunlight, with no button to press. It's the "draw and it's just right" approach.

The Gideon Pebble offers 10 manual brightness levels, for those who prefer to set your own brightness rather than trust an algorithm to guess it for you. It does mean one more setting to think about versus the RFX1's fully hands-off approach. The Pebble also features instant-on technology. 

Dot color: green only vs. red (or both)

The RFX1 is a green dot only — Viridian's whole pitch for the RFX line rests on the human eye's greater sensitivity to green wavelengths, which shows up faster in bright daylight and washes out less than red. The Pebble offers a choice of red or green. If you've trained on red dots for years and don't want to relearn your visual pickup, or you carry with anyone who's colorblind to green specifically, the Pebble gives you that option. If maximum daylight visibility is the priority, green has the physiological edge either brand will tell you about.

Enclosed emitter: Pebble E vs. open emitter only

The Pebble E seals the emitter against pocket lint, sweat, and debris — a real vulnerability for any open-emitter reflex sight riding loose in a pocket holster all day. Gideon prices the enclosed version at $299.99 MSRP ($259.99 launch price), a roughly $60–100 premium over the open Pebble depending on where you buy. Neither the RFX1 nor the standard Pebble has a sealed emitter for the Bodyguard 2.0; the RFX1 relies on its IPX4 water resistance rating and machined aluminum housing instead. If you carry IWB, the Pebble E could be worth the upcharge.

Adjustment range and zeroing headroom

The RFX1 lists more than 90 MOA of total adjustment, while the Pebble specs out at 35 MOA per direction (70 MOA total). In practice, both give you more than enough room to zero a pistol dot at typical carry distances — but the RFX1's wider range gives a little more forgiveness if your particular dovetail fit runs slightly off from a dead-center factory press.

Factory integration vs. aftermarket install

This is the biggest practical difference if you're buying the pistol and the optic at the same time. Smith & Wesson now sells the Bodyguard 2.0 with the RFX1 factory-installed across three SKUs — no-thumb-safety, thumb-safety, and a broader-compliance version — at $599 MSRP. That bundle runs roughly $79–129 cheaper than buying the pistol and the RFX1 separately, and it sidesteps the tight sight-pusher install altogether, since it ships zeroed from the factory. The Gideon Pebble has no factory-bundle equivalent as of this writing; it's aftermarket-only, which means budgeting for professional installation regardless of which color or emitter style you choose.

Spec comparison at a glance

Street prices vary by retailer and change over time — treat these as a snapshot rather than a quote.

Choose the RFX1 if you want to...

Run the lightest optic available for this platform. Skip thinking about brightness entirely and let ambient sensing handle it. Buy the pistol and the sight together, factory-zeroed, without arranging your own installation. Get the widest adjustment range for zeroing.

Choose the Gideon Pebble if you want to...

Set your own brightness manually to the exact specs you desire. Get the option of either red or green with the Pebble. Now with the option of a closed emitter that shrugs off debris. Buy the optic on its own rather than as part of a factory pistol package.

Frequently asked questions

Which is lighter, the Viridian RFX1 or the Gideon Pebble? The RFX1, by a wide margin. At 0.53 oz it's roughly 40% lighter than the standard Pebble (0.84 oz) and less than half the weight of the enclosed Pebble E (1.16 oz).

Can I buy a Bodyguard 2.0 with the optic already installed? Yes, but only with the RFX1. Smith & Wesson sells three Bodyguard 2.0 SKUs with the RFX1 factory-installed at $599 MSRP. Gideon's Pebble is aftermarket-only and requires separate installation, typically a difficult process.

Does either optic come in both red and green? The RFX1 is green-only. The Pebble has green and red. The enclosed Pebble E is the one option that offers a choice between red and green.

Do I need a gunsmith to install either one? Depends on your skill level. We ended up breaking one of the mounts when installing for the first time. The Bodyguard 2.0's rear dovetail is a tight press fit, and swapping the factory sight for either optic is commonly done with a sight pusher rather than hand tools — unless you buy the RFX1 factory-installed, which skips this step entirely.

Will either optic work with a Tulster holster for the Bodyguard 2.0? Yes. Tulster's OATH, Profile+, and Contour holsters for the Bodyguard 2.0 and Bodyguard 2.0 Carry Comp are built to accommodate optics from both brands. We also have the Viridian RFX1 for purchase on our site. 

The bottom line

Both the RFX1 and the Pebble do exactly what they claim: a no-cut, dovetail-direct reflex sight built specifically for a pistol that badly needed one. The RFX1 wins on weight, hands-off simplicity, and the factory-bundle option if you're buying the gun new. The Pebble wins on manual control, color choice, and the sealed Pebble E for pocket carriers who don't want lint anywhere near the emitter. Neither is the wrong answer — they're built for slightly different carriers, the same way Tulster builds different holsters for different carry styles.

Whichever optic you land on, your holster needs to be built around it, not just around the gun. Check out Tulster's Profile+ IWB holsters for the Bodyguard 2.0 and Bodyguard 2.0 Carry Comp — both optic-ready, both made in the USA, both backed by Tulster's lifetime warranty.