The RS Regulate Trijicon RMR modular upper mount is a precision optic attachment designed for shooters running micro red dots on AK-pattern rifles. If you're building or upgrading an AK side-rail gun and want to mount a Trijicon RMR, RMR Type 2, or Holosun HS507C, this upper is the mechanical interface that lets you do it cleanly and reliably. RS Regulate's modular system approach means this upper pairs with one of their purpose-built lowers—each tailored to a specific rifle platform and mounting geometry—so you get proper sight picture and zero repeatability instead of compromise.

The beauty of RS Regulate's design is modularity without sacrifice. This upper is compact and minimal, keeping weight and profile low while accepting two of the most popular compact dot platforms in the market. Whether you're running a Trijicon RMR for duty or sport shooting, or a Holosun HS507C for versatility and battery life, the mounting interface is the same. Once you pair it with the correct lower for your rifle (front-biased, rear-biased, or full-length), you have a stable, returnable-to-zero optics mount that respects the ergonomics and handling of your AK.

This is a serious choice for serious shooters who refuse to accept sloppy optics mounting on an otherwise quality rifle. RS Regulate has spent over a decade refining side-rail systems across nearly every AK variant in circulation—Eastern European, Yugo/Serbian, Romanian, PSL, Czech, Century proprietary—so the engineering here reflects real-world testing and respect for the platform.

Key Features

• Modular design pairs with RS Regulate lowers for platform-specific fitment
• Accepts Trijicon RMR, RMR Type 2, and Holosun HS507C micro red dots
• Compact, minimal footprint keeps weight and sight line low
• Precision-machined for reliable zero retention and return-to-zero
• Lightweight at 1 oz—no unnecessary bulk

Specifications

Optic Compatibility	Trijicon RMR, RMR Type 2, Holosun HS507C
Dimensions	1.9 x 1.9 x 0.96 inches
Weight	1 oz
Mount Type	Modular upper (requires compatible RS Regulate lower)

Frequently Asked Questions

What rifle is this mount compatible with?

This is the modular upper only. Compatibility depends on which RS Regulate lower you pair it with. RS Regulate makes lowers for Eastern European AKs, Yugo/Serbian rifles, Romanian M10/RH10, PSL, Century Arms proprietary rails, and Czech vz. 58s, with options for front-biased, rear-biased, and full-length geometries. You'll choose the lower that matches your specific rifle platform and preferred sight picture location.

Can I use this with a Trijicon RMR and a Holosun HS507C on the same rifle?

Both optics use the same mounting interface, so this upper will accept either one. You can swap between them if you have both, though you'll want to verify your zero after any change.

What's included in the box?

We don't have that information. Contact us to confirm what hardware and documentation come with your order.

Do I need to buy a lower separately?

Yes. This upper must be paired with the correct RS Regulate lower for your rifle platform. We carry a range of lowers—reach out if you need help identifying which one fits your gun.