The firearms industry loves a good modularity story, and the latest chapter features two heavy hitters: Magpul and Ruger. Their collaboration, the RXM, was already a strong contender for the "Swiss Army Knife of Pistols" award. Now, with the release of the Sub-Compact Enhanced Handgun Grip (EHG), the RXM is officially entering its travel-sized era, proving that sometimes, less really is more—especially when you’re trying to hide a firearm under a slim-fit t-shirt.

The main selling point of the RXM is the Fire Control Insert (FCI). Think of the FCI as the pistol's actual brain (and the part the ATF considers the firearm). Because the serialized guts are separate from the plastic shell, you can swap the RXM from a full-sized duty rig to a compact carry piece, and now down to a sub-compact, just by moving the FCI between different EHGs. It’s essentially Lego for adults who prefer the range to the playroom.

The new Sub-Compact EHG doesn’t skimp on ergonomics just because it’s smaller. It features a ¾-scale version of Magpul’s Trapezoidal Surface Projection (TSP) texture. This aggressive pattern is applied to the front and back straps, side panels, and even the forward index pads. It provides enough friction to keep the gun planted during rapid fire without feeling like you’re gripping a piece of 40-grit sandpaper during a long day of concealed carry.

Color coordination might not be the first thing on a shooter’s mind, but Magpul knows their audience. The Sub-Compact EHG is available in the "Big Four" colors: Black, Flat Dark Earth (FDE), Olive Drab Green (ODG), and Stealth Gray. Whether you’re trying to match your plate carrier or your favorite pair of range pants, there is a polymer hue ready to accommodate your aesthetic preferences.

The RXM ecosystem is practically known for its cross-compatibility. The Sub-Compact EHG plays nice with Magpul GL9 PMAGs and factory Glock magazines. This is a win for anyone who already has a drawer full of Glock-pattern mags and doesn't feel like investing in an entirely new proprietary ecosystem. It’s a nod to efficiency that keeps the overall cost of ownership refreshingly low.

Out of the box, the EHG comes surprisingly well-equipped. It ships with a Ruger-manufactured magazine release, as well as the necessary magazine release, slide-lock, and takedown-pin springs. This means you aren't hunting for tiny, easily lost tension coils just to get your new frame up and running. You simply drop in your FCI, and the "new" gun is ready for the holster.

Speaking of holsters, the RXM’s design philosophy leans heavily on existing aftermarket support. The Sub-Compact EHG is compatible with many Glock Gen3 parts, including slide-stop components and magazine releases. More importantly, it fits a wide variety of Glock-compatible holsters. This bypasses the typical new gun frustration where you have to wait six months for a holster manufacturer to catch up with the latest release.

The frame design also incorporates subtle features that improve the shooting experience. A deep trigger guard undercut allows for a higher grip, which helps manage recoil by keeping the bore axis lower in the hand. Additionally, a scalloped magazine release area ensures that when you need to swap mags, your thumb isn't searching for a hidden button; it’s guided right to the textured release.

As things stand now, the Ruger RXM with the Sub-Compact EHG is a shift toward value-driven versatility. By offering a durable, accurate handgun that can transform from a range toy to a duty tool to an ultra-concealable package, Magpul and Ruger are making a compelling case for the "one-gun" philosophy. It’s a practical solution for shooters who want a customized experience without the custom-shop price tag.