The name 'KeyMod' was coined by Eric Kincel (then working for VLTOR Weapon Systems) following the naming trend of other VLTOR accessories with the suffix 'Mod' meaning modular, and 'Key' being a reference to the key-hole profile of the mounting slots. The concept was first created by VLTOR Weapon Systems of Tucson, Arizona, and released through Noveske Rifleworks of Grants Pass, Oregon, before being published open sourced in the public domain for adoption by the entire firearms accessory industry. The popularity of the KeyMod system has led not only to an increase in the number of KeyMod rails available, but also to an increase in the number of KeyMod accessories.KeyMod is a universal interface system for firearm accessory components designed to supersede the MIL-STD-1913 accessory rails. Currently, there are more companies working with KeyMod than with any other new forend concept.

While there are other attachment systems - such as Magpul's M-Lok and Tech Ops/ Rebel Arms's T-bolt - vying for the title of industry forend standard, KeyMod's open-source design seems to be the frontrunner.

The system, which is similar to the attachment interface still used in the modular shelving systems of retail shopping stores, also offers greater flexibility for attaching accessories.

The KeyMod attachment system has become widely popular among rifle enthusiasts as the firearm industry has searched for a new forend design to replace the standard MIL-STD 1913 'Picatinny' quad rail.įeaturing a number of key-shaped slots that serve as modular attachment interfaces instead of one continuous rail, the KeyMod system provides a universal platform that is lighter and more ergonomic than traditional quad rails.

Nut for keymod accessories