Mounts for 40mm

 (Patent pending)

Spuhr® New Generation 40mm Modular Grenade Launcher Mount – Precision Through Modularity

The Spuhr® Modular 40mm Mount represents a new standard in mission-adaptable fire-control accessories for 40mm grenade launchers. Developed to maximize first-round hit probability regardless of munition, the system introduces a groundbreaking interchangeable Ranging Unit that delivers unmatched flexibility in the field.

Interchangeable Ranging Units Tailored for Every Ammunition Type

At the core of the design is a robust, easy-to-swap Ranging Unit fitted with pre-engineered ballistics, including trajectory and spin-drift compensation. Each Ranging Unit is individually zeroed once, allowing users to maintain precise, repeatable accuracy without re-zeroing when switching between ammunition types.

Operators can build a complete set of mission-specific Ranging Units — enabling seamless transitions between different 40mm munitions regardless of whether changing between lethal and/or less-lethal munition.

Enhanced Accuracy and Consistency

The built-in ballistic corrections within each Ranging Unit significantly reduce user errors, thereby increasing the likelihood of accurate first-round impact. By integrating spin-drift and trajectory data into the Ranging Unit, the Modular Grenade Launcher Sight Mount is even more user friendly than the legacy GLSM produced by Spuhr®.

Reduced Training Burden – Increased Operational Readiness

As each Ranging Unit comes delivered with built-in trajectory and spindrift compensation, operators require less time and ammo expenditure to become proficient, thereby providing an instant return on investment within the first training sessions.

Mission-Focused Versatility

Whether supporting peacekeeping operations, law-enforcement tasks, or military missions, the Spuhr® Modular 40mm Mount provides reliable adaptability. Its rugged construction, intuitive Ranging Unit replacement, and consistent precision, make it a force multiplier for units requiring dependable, repeatable performance with multiple ammunition types.

First generation GR-mounts (Patented)

Recognizing the variety of launchers and munitions available, the ballistic bow-at the core of the GLSM-is precisely manufactured to match the exterior ballistics of the specific launcher and ammunition specified by the customer. 

With design for use with HE low-velocity munitions, the GR-1000/1001/1003 features a ballistic bow with range settings from 50 to 350 meters. For enhanced usability in low-light conditions, the rear of the ballistic bow includes Luminova or tritium inserts for the 100, 200 and 300-meter range settings.

GR-1000 HK GLM Mount, Tritium
The GR-1000 is our original Grenade Launcher Sight Mount, specifically designed to attach to the side of an HK GLM.
(GR-1010 Luminova version available.)

GR-1001 Mount for Side Picatinny, Tritium
NSN 1240-22-625-2185 (Tan color)
NSN 1005-22-624-9431 (Tan color w/ Aimpoint T1)
NSN 1240-15-206-0284 (Luminova)

The GR-1001 is designed to mount onto the side of a Picatinny forend or rail.
(GR-1011 Luminova version available.)

GR-1003 Grenade Launcher Sight Mount
The GR-1003, based on the GR-1001, was developed for the Swedish Armed Forces and is designed to mount onto the side of a Picatinny rail. It features an updated ballistic bow geometry, allowing for compatibility with larger accessories mounted on the side Picatinny interface. 

GR-1004 Grenade Launcher Sight Mount
The GR-1004 Grenade Launcher Sight Mount (GLSM) combines our proven design with the ballistics for the M433 HEDP grenade.

Designed to be mounted onto the side of a Picatinny Rail.

GR-0101
The GR-0101 is an adapter rail for the Spuhr Grenade Launchers Sight Mount (GLSM,) allowing a GLSM designed to attach to a side rail to be used on a platform with only a top rail.

It is manufactured from 7075 T651 aluminum and is available in black or tan.

The GR-0101 also features Spuhr Interfaces along the top surface, allowing various Spuhr ISMS accessories to be used.

Export Restrictions
In accordance with Swedish Law (1992:1300) about Military Equipment and Ordinance (1992:1303) about Military Equipment export of the GLSM requires an Export Permit issued by the Inspectorate of Strategic Products (ISP).