Really Right Stuff MPR-C: Optional anti-twist stop for MPRs from RRS

Really Right Stuff MPR-C, optional anti-twist stop for your MPR rails

Do you know that slightly annoying feeling when the camera twists just a little on the rail and you wonder why the framing suddenly doesn’t quite fit anymore? That’s exactly where the Really Right Stuff MPR-C comes in: a compact, optional anti-twist stop for RRS MPR multi-purpose rails that keeps your gear steady so you can focus on the subject instead of constantly nudging, tightening, and correcting.

The MPR-C is designed as a removable anti-twist device and fits perfectly on the MPR rails from Really Right Stuff. It really helps when you’re working with heavy telephoto lenses, longer focal lengths, or precise panoramas where even half a degree of rotation is simply too much. We’d say: small in the hand, big in its impact.

Precise anti-twist support for lens feet and clamps

The MPR-C has a straight side that serves as an anti-twist stop for most lens feet. This straight edge sits flush against the foot of your lens and prevents the combination of camera, lens, and rail from twisting under load. This really pays off during longer studio sessions or wildlife shoots on a tripod, because you’ll need to readjust far less often.

On the other side, the MPR-C features a curved shape. This curved side is intended as an anti-twist stop for RRS clamps and for rounded lens feet. This lets you use it flexibly, depending on which combination you’re currently running. We think it’s a pleasantly pragmatic solution: just rotate it, choose the right side, tighten it down, done.

Ultralight accessory at only 2 g

Weighing only 2 g, the Really Right Stuff MPR-C is practically weightless in your camera bag. It’s so light that you can easily leave it permanently mounted on your MPR rail without worrying about extra load. Especially if you’re on the move a lot, for example when traveling or on longer hikes, this minimal weight is a real advantage.

Despite its low weight, the MPR-C is robust enough to function reliably even under intensive use. It is designed to support your MPR rails and lens feet over the long term without bending or working loose, as long as everything is mounted correctly.

Scope of delivery: mounting screws and hex key included

The Really Right Stuff MPR-C comes with two M3 mounting screws that let you securely attach the anti-twist stop to your MPR rail. A matching M2.5 hex key is also included so you can get started right away without having to search for tools. Everything you need for installation is already in the box.

Installation itself is straightforward. Position the MPR-C at the desired point on the multi-purpose rail, insert the two M3 screws, and tighten them with the supplied M2.5 hex key. This creates a solid stop that secures your camera–lens combination against twisting.

Made in the USA, RRS precision and build quality

The Really Right Stuff MPR-C is manufactured in the USA and therefore adheres to the high quality standards for which RRS is known. The precise machining ensures that the anti-twist stop fits exactly on the MPR multi-purpose rails and RRS clamps. The edges are cleanly finished, the fit is well thought out, and the entire construction is designed for professional use.

We see this as an accessory that isn’t meant to be a flashy highlight, but a quiet problem-solver in the background. It’s precisely this kind of detail that often makes a setup truly complete. If you’re already working with Really Right Stuff MPR rails and want more anti-twist protection and repeatability, the MPR-C is a very sensible addition.

Compatibility with MPR multi-purpose rails and RRS systems

The MPR-C was developed specifically as an optional anti-twist stop for MPRs from RRS. This means it integrates seamlessly into the existing Really Right Stuff system. It works with common MPR multi-purpose rails and is designed to harmonize with typical RRS clamps and many lens feet, especially those with a straight or rounded contact surface.

If you’re already using an Arca-compatible setup with RRS components, you’ll generally be able to integrate the MPR-C without any detours. It adds a defined stop point to your rail that provides more stability, repeatability, and security, especially in demanding setups.

More stability for telephoto lenses and panoramas

Especially with telephoto lenses at longer focal lengths, in macro work, or when shooting panoramas on MPR rails, even minimal rotation can lead to visible deviations. The Really Right Stuff MPR-C helps you minimize this rotation by acting as a mechanical stop against which the lens foot or clamp sits squarely.

This gives you a more stable base for your camera and lets you concentrate more on composition, focus, and exposure. In practice, that means less frustration from slipping setups and more repeatable results, for example when you’re doing burst series, stitched panoramas, or recurring studio setups.

Compact design, flexible use

The MPR-C is deliberately compact so it doesn’t get in the way on the MPR rail. You can mount it at various positions along the rail, depending on your setup. With the straight side for most lens feet and the curved side for RRS clamps or rounded lens feet, you remain flexible and can adapt the anti-twist support to your gear.

Because it’s removable, you can reposition, remove, or realign the anti-twist stop whenever needed without having to swap out the entire rail. This makes it a versatile accessory within your Really Right Stuff system.

Conclusion: small detail, big impact in an RRS setup

The Really Right Stuff MPR-C is a removable anti-twist stop for MPR multi-purpose rails from RRS, equipped with a straight side for anti-twist support on most lens feet and a curved side for RRS clamps or rounded lens feet. Weighing only 2 g and supplied with two M3 mounting screws and a matching M2.5 hex key, it’s quick to install and ready to use immediately.

If you want to enhance your RRS system with a small but very useful detail that reduces rotation and increases stability, the MPR-C fits this role perfectly. Unobtrusive, lightweight, functional, and designed to make your MPR rails more reliable in everyday use.