GRS M-Lok 80 mm Picatinny Rail

• M-LOK to Picatinny interface: adds a standard rail section to an M-LOK forend, making it easier to mount compatible accessories such as bipods, lights, or other rail-based equipment.
• 80 mm rail length: provides enough mounting space for many common accessories while keeping the setup compact and avoiding unnecessary bulk on the rifle.
• Compatible with GRS Warg and Ragnarok: gives owners of these GRS stocks a straightforward way to expand the forend with rail-mounted support gear for field or range use.
• Broad M-LOK compatibility: can also be fitted to other products with M-LOK tracks, so it is useful beyond one stock platform and suits a wider range of rifle builds.
• Black finish: matches most modern rifle stocks and accessories, helping the rail integrate cleanly into practical hunting or shooting setups.

About the GRS Accessories Series

GRS Accessories is the part of the GRS lineup focused on expanding how a rifle can be configured for hunting and shooting. In the company’s 2026 catalogue, the range is presented as a collection of current shooting accessories and extra options that help shooters tailor a rifle to a specific role rather than replacing the core stock system. The series includes bipods, Arca rails, spigots, Picatinny adapters, shooting bags, recoil pads, and stock-mounting hardware, covering both support equipment and the interfaces needed to attach it.

Across the series, the design emphasis is practical compatibility and improved shooting stability. GRS presents items such as Arca rails for attaching tripods, shooting bags, hand stops, barricade devices, and bipods, while other accessories adapt the rifle for different mounting standards and field positions. That makes the series especially relevant for shooters who move between prone work, supported positional shooting, and general rifle use. Rather than adding complexity for its own sake, the GRS Accessories family is built around simple, purpose-driven parts that help a rifle stock accept the equipment needed for a more stable and adaptable setup.

About the GRS M-Lok 80 mm Picatinny Rail

The GRS M-Lok 80 mm Picatinny Rail is a compact mounting accessory designed to add a Picatinny interface to rifles or stocks equipped with M-LOK tracks. Its main role is straightforward but useful: it lets a shooter fit rail-mounted accessories to a forend that would otherwise only accept direct M-LOK attachments. In practice, that broadens the range of compatible support equipment and makes it easier to integrate existing accessories into a rifle setup.

The 80 mm length keeps the rail short enough to avoid adding unnecessary bulk, while still offering enough space for many common mounting tasks. This makes it well suited to rifles that need a practical attachment point without turning the forend into a long, heavy rail surface. On a field rifle or a precision-oriented stock, that balance helps preserve handling while still improving accessory compatibility.

GRS states that this rail can be mounted on the GRS Warg and GRS Ragnarok, and it can also be used on other products that have M-LOK tracks. That flexibility is the main advantage of the design. It gives owners of compatible GRS stocks a simple way to add bipod or accessory mounting options, and it also makes sense for other M-LOK-based rifle platforms where a short Picatinny section is the most practical interface. Finished in black, it fits visually with modern rifle components and stock hardware.

About GRS

GRS traces its roots to 1983, when the family business began as Grodås Møbler AS, a furniture manufacturer. The brand’s own history as GRS started in 2010 in Grodås, Hornindal, Norway, and the company began producing laminate rifle stocks in 2011. Today, GRS Riflestocks AS remains headquartered in Hornindal and is known for developing rifle stocks for both hunting and shooting.

The company’s product range spans laminate, composite, and aluminum chassis stocks, with lines such as Hunter Light, Sporter, Bifrost, Fenris, Warg, and Ragnarok. GRS is particularly associated with ergonomic stock design and practical adjustability, including features such as the GRS SpeedLock adjustment system. That background makes the brand especially relevant in the rifle-stock and stock-accessory category, where fit, stability, and compatibility with support equipment are central to how the rifle performs in the field or on the range.

Main Features

• Manufacturer: GRS
• Series: GRS Accessories
• Accessory type: Picatinny rail
• Accessories for: Rifles
• Compatibility: GRS Warg, GRS Ragnarok, and other products with M-LOK tracks
• Length: 80 mm
• Color: Black

Warranty

2 years. GRS states a two-year warranty period for this product, covering the rail as a manufacturer-backed accessory.