The reason for this is to ensure that every M-LOK system is made with the same quality and design as the original. Instead, they chose to offer free licensing to any manufacturer that obtains permission ahead of time. Magpul, the company that helped come up with the M-LOK system, decided not to make their product open source. Instead, the system is made up of narrow slots that T-shaped nut that, when turned, lays across the slot, locking the attachment into place. Unlike KeyMod, the M-LOK system doesn’t have a keyhole shape to slip your bolt into. Today, we’re going to take a look at both mounting systems and see how they’re similar and how they differ.

So naturally as the KeyMod and M-LOK systems grew in popularity, hobbyists and experts began debating over which system is better. What’s the Better Choice between the Two? Lots of AR-15 UppersĪs you probably already know, two similar items in the firearms community cannot exist without being fiercely compared with each other.

If you just want to know…here’s our picks for the Best AR-15 Handguards out there. Now that you’re able to stick rails adapters only to the part of the gun we plan on mounting an attachment, you don’t have to worry about unnecessary weight or that cheese grater, snagging sensation of your Picatinny rail ripping across your hand, clothing, or rifle case. The benefits of these two systems were revolutionary. M-LOK (left) and KeyMod (right), Image courtesy of Lucky GunnerĮven better, both of these systems also gave gun owners the opportunity to mount small rails directly to their handguards, effectively eliminating the need to attach a large Picatinny rail across the gun.

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