In 2012 Vltor introduced an “open source” universal attachment system for accessories called Keymod. The desire was brilliant to create an industry standard for directly mounting handguard accessories in a well engineered system with specifications available free for any manufacturer to use. Similar to a classic Beta vs VHS video tape battle, at the 2014 NRA annual meeting, Magpul introduced a new “open source” accessory attachment system known as M-Lok. While both systems are well designed and have the same goal, they have different solutions to the modular rail. I believe both will be around for quite some time since Keymod struck first and has quickly established a well accepted place industry wide. In addition to the powerful Magpul name though, M-Lok does offer several advantages that I feel will push it to the top:
Cheaper/easier to manufacture M-Lok rectangular cut-outs vs Keymod keyholes.
M-Lok is capable of being built into plastic hand-guards.
More adjustability options exist along the slot vs a fixed keyhole.
Aesthetically better looking (opinions vary).
This article was published on Thursday 03 July, 2014.