Henneberger Swift Base for Heym SR 21

• Swift one-lever operation: the HMS Swift design locks and releases with a single lever, so the optic can be removed or refitted quickly without the slower two-point handling common on many mounts.
• Secure mechanical lock: when the lever is closed, it is mechanically locked against accidental opening, giving the mount a more secure hold during transport, field use and repeated recoil.
• Adjustable clamping fit: independently adjustable clamping elements let the base be tuned for proper contact on the rifle, which supports repeatability and a stable return to zero after removal and reinstallation.
• Low 7.00 mm build height: the compact height helps keep the optic close to the bore, supporting a tidy rifle setup and a natural sight line when matching the mount to the chosen upper section.
• German-made construction: made in Germany as part of Henneberger’s mounting range, this base is built for shooters who want precise fit, durable materials and dependable everyday handling.

About the Henneberger HMS Swift Series

Henneberger HMS Swift is the company’s quick-detach mounting series, developed for hunters and sport shooters who want a mount that combines fast handling with a secure mechanical interface. A defining feature of the series is its single-lever operation: the optic is attached and released with one movement, which makes scope changes and rifle transport simpler in the field. The lever is mechanically locked in the closed position, helping prevent unintended release once the mount is in place.

The series is built around a practical design philosophy. Independently adjustable clamping elements allow the fit to be tuned to the firearm, supporting repeatability and a firm seat under recoil. The mount body uses hard-anodized aluminum, while the operating parts are made of steel and hardened in stressed areas, balancing low weight with durability where it matters most. Within the HMS Swift family, Henneberger offers versions for several rifle platforms and optic interfaces, including ring and rail configurations, making the series suitable for traditional hunting rifles as well as more specialized sporting setups.

About the Henneberger Swift Base for Heym SR 21

The Henneberger Swift Base for Heym SR 21 is the rifle-specific lower component of the HMS Swift system, made to provide a stable connection between a Heym SR 21 and an upper mount section that uses the Blaser mounting standard. Its role is straightforward but important: it creates the correct interface on the rifle so the optic assembly can be mounted securely and removed again without complicated handling.

Because it belongs to the HMS Swift family, this base supports the system’s key practical advantage: one-lever quick-detach use. That matters for shooters who alternate between optics, remove a scope for transport, or want easier access to the rifle during maintenance. The mechanically locked closed position adds reassurance in the field, while the independently adjustable clamping concept helps the mount sit correctly on the firearm for consistent positioning.

The base also keeps the setup compact. With a 7.00 mm build height and a black finish, it is intended to integrate cleanly with the rifle and the chosen upper mount. As a fixed rifle-specific base rather than a universal rail, it is aimed at users who value a precise fit and a mounting solution matched to the geometry of the SR 21. For hunting optics and general sporting use, that rifle-specific approach helps create a neat, repeatable and mechanically secure mounting platform.

About Henneberger

Henneberger was founded by master gunsmith Rudolf Henneberger on November 29, 1966, in Münnerstadt, Germany. The company built its reputation in gunsmithing, firearm repair and scope-mount engineering, with a product range that includes mounting components for riflescopes and red-dot sights. In 2000, Henneberger added CNC machining as a second business area, expanding its manufacturing capability for precise metal parts.

The business remained family-led when Frank Henneberger took over on January 1, 2004. A move to a newly built facility followed in October 2009, and the site was expanded again in 2017. This background is relevant to Henneberger mounting systems because it reflects the company’s long focus on practical firearm work, precise machining and robust scope-mount construction for hunting and sporting rifles.

Main Features

• Manufacturer: Henneberger
• Series: Henneberger HMS Swift
• Made in: Germany
• Product type: Blaser Mounts
• Color: Black
• Height: 7.00 mm
• Compatibility below: Heym SR 21
• Compatibility above: Blaser Mounting Standard

Warranty

Henneberger covers this mount with a 25-year warranty, giving long-term support for a component intended for repeated installation, removal and regular field use.