The optic is not new. Ruger launched the ReadyDot in April 2023 as SKU 90742, a $99.95 battery-free micro reflex sight on the Shield RMSc footprint for the MAX-9 and other compact pistols. What launched on May 28, 2026 is a ReadyDot dimensioned to mount on the much smaller LCP MAX slide, sold as SKU 90990 at $129.95 with an included holster. This is a line extension of a proven optic to Ruger's smallest pocket pistol, paired with the accessory that normally trips up an optics conversion.

That framing matters because the LCP MAX has never had a standard optic cut. It is a sub-11-ounce .380 with a 2.8-inch barrel and iron sights most shooters find hard to use quickly. The 90990 is the first factory-supported way to put a micro red dot on one without aftermarket milling, and the $30 premium over the standalone ReadyDot is essentially the price of the holster cut for the optic-equipped gun.

The ReadyDot has no battery and no buttons. Instead of an LED powered by a cell, it uses a fiber-illuminated reticle that collects ambient light and projects a red aiming dot onto the lens, self-adjusting in brightness as conditions change. Ruger designed it for battery-less operation at typical concealed carry pistol distances, which is the honest scope of the design: it is built to work fast at close range, not to replace a full-power LED dot on a duty gun.

For a deep-carry pocket pistol, removing the battery is the single most useful thing an optic can do. The standard objection to a red dot on a gun like this is maintenance: a pistol you may not fire for months is a pistol whose optic battery you will forget. The ReadyDot has nothing to forget. It is also waterproof and shock-resistant with no electronics to fail, which matches how a pocket .380 actually gets carried, knocked around, and ignored until it is needed.

The 90990 mounts to the top-rear of the LCP MAX slide rather than dropping into an RMSc pocket like the standard ReadyDot. That is why Ruger calls out one hard compatibility limit: the ReadyDot is NOT compatible with LCP MAX pistols equipped with a loaded chamber indicator. The indicator occupies the same slide real estate the optic needs, so that variant is excluded. Check your specific pistol before buying the standalone optic.

The standalone kit includes the optic, the mounting hardware, and the wrench to install it. It is a drop-on job for an owner comfortable removing the rear sight, not a gunsmithing project. Buyers who would rather not touch the slide at all can order the factory LCP MAX (model 13758) that ships with the ReadyDot already fitted and zeroed from Ruger.

Adding a red dot to a carry pistol almost always orphans your holster. The optic changes the slide profile, and most pocket and IWB rigs are cut for the bare gun, so they either will not clear the dot or no longer cover the trigger guard safely. The 90990 sidesteps that by including a holster sized for the LCP MAX with the ReadyDot installed, and Ruger specifies that it fully covers the trigger guard with the optic mounted.

Trigger-guard coverage is not optional on a hammer-fired .380 carried in a pocket, where keys and lint can find the trigger. Bundling a rig that already accounts for the optic turns a two-step project, buy a dot, then hunt for a holster that clears it, into one purchase. For the buyer who wants more carry options, the LCP MAX still has a deep aftermarket of pocket and appendix rigs covered in our Ruger LCP MAX upgrades guide.

There are two paths. If you already own a compatible LCP MAX (one without a loaded chamber indicator), the standalone ReadyDot kit (SKU 90990, $129.95) drops the optic and holster onto the gun you have. If you do not own one yet, the factory LCP MAX optic model (13758) ships with the ReadyDot pre-installed in .380 ACP, 10+1, with a 2.8-inch barrel and an 11-ounce weight, paired with a tritium front sight that shows through the optic window as a backup reference. Street pricing on that pistol runs in the low-to-mid $300s at dealers.

Source: ShopRuger ReadyDot for the LCP MAX (90990)

This is a smart line extension, not a breakthrough. Ruger took an optic shooters already trust on the MAX-9, sized it for the LCP MAX, and bundled the holster that an optics conversion usually forces you to buy separately. At $129.95 with a battery you never have to think about, it is the lowest-friction way to put a red dot on a pocket .380, and the factory model 13758 is the lowest-friction way to buy into it outright. For where the LCP MAX sits against the rest of the segment, see our best .380 ACP pistols ranking, our best concealed carry pistols guide, and our coverage of the Magpul EHG grip for the LCP MAX. Use the side-by-side comparison tool to stack the LCP MAX against the S&W Bodyguard 2.0, Glock 42, or SIG P238.