KeyMod

KeyMod is a standardized mounting system for firearms, used to attach tactical accessories—such as flashlights, grips, bipods, laser sights, or RIS / Picatinny rails. KeyMod first appeared in 2012 as an open-source standard developed by VLTOR and Noveske. The name comes from the shape of its slots—which resemble a keyhole used as a guiding and locking point. Key = key, Mod = modular—meaning easy to reposition. KeyMod accessories are also available on our webshop.

Differences between KeyMod, RIS, and M-LOK

KeyMod: Lightweight, with no sharp edges, requires specific “keyed” accessories with matching backplates. The keyhole-shaped slots allow modular, screwless mounting by sliding and locking from the rear.
M-LOK: A competing system by Magpul. Uses oval slots and accessories attach via rotating T-nuts. Considered stronger, simpler, and more durable than KeyMod. Now in service with US SOCOM and other NATO forces.
RIS / Picatinny (MIL-STD-1913): The original system using solid metal rails. Very robust but heavy and less ergonomic. Offers no modularity without additional rail sections or adapters.

KeyMod in military use

Although KeyMod was revolutionary at launch, it has been gradually replaced in military use by M-LOK, which demonstrated better performance under stress. U.S. Army tests showed that M-LOK has higher tensile strength, better zero retention for optics, and easier maintenance. Nevertheless, KeyMod is still popular among civilian shooters, law enforcement, and sport shooters. KeyMod is also widely used in the airsoft community, especially on rifle replicas with modern handguard designs, where it offers a great balance of weight and modularity.

Advantages of the KeyMod system:

Lightweight and ergonomic design
Smooth surfaces with no protruding elements
Easy installation of accessories without additional rails

Disadvantages of the KeyMod system:

Requires compatible accessories
Lower strength compared to M-LOK
Development discontinued and limited support in new firearm platforms