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KeyMod attachments work probably exactly how you imagined they might: Specially shaped lugs, designed to provide tension when slid into the key-shaped slots, secure either a rail section or accessory directly to the handguard. No "male" connectors means no pointy bits when gripped. The bulky connections come from accessories, not the rail. They don't leave unnecessary "rail" sitting around. Negative/female rail systems like KeyMod and M-LOK are: This affords a few advantages over the ole 1913 setup. KeyMod is "open source", meaning any manufacturer in the firearm industry can freely develop handguards or rails that utilize KeyMod without having to license or pay royalties to VLTOR.
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Instead, it's a "negative" or female rail system, where as the Picatinny rail system is positive, or male. The KeyMod system does away with the external, raised rails and pointy edges. You know that as the Picatinny rail, and it still remains one of the most popular - albeit heavier, bulkier, and less comfortable - rail systems on the market. It was intended to replace the military's tried 'n true MIL-STD-1913 rail. But first, let's give a quick summary of what each system is, exactly. KeyMod is a rail system developed in 2012 by VLTOR Weapons Systems in Arizona. You'll find the measurements you need below and more importantly, we'll review an in-depth comparison the Military's own SOCOM conducted. We need to give a shout-out to The Broad Side self-defense shooting publication for some of the pictures below. Which is better for all your accessories, optics, bipods, flashlights, and lasers? KeyMod or M-LOK? What are the differences? We're breaking down both. Like the kind you'd find on those steel shelves in the garage. with M-Lok you can have M-lok mounts, picatinny mounts, and now keymod mounts.One's a bunch of slats, one's a bunch of keyholes. It certainly does allow for a bit more versatility.
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but if you have a box full of keymod stuff do you just keep it or no? (you gotta have an M-lok rail to use this adapter). I think the manufacturers of this product might also be betting at least to some degree that M-lok eventually will be bigger than them all. It's just a matter of making wagers on who will win this thing. My rail is M-Lok and I will get what accessories I need for that using that system. once you buy into one system changing is expensive. This attachment might be for those people who say invested a bunch of money into keymod accessories but don't want to go out and re-buy stuff as M-Lok comes online. Unscrew two allen head screws and swap rails without ever altering anything. Also is it possible to convert a keymod mount to M-LOK by changing out the keymod backing nut for a M-LOK one?Actually with SLR Rifleworks (the rail I chose) I can if I am not mistaken get a rail, one of each, and have one be M-Lok and the other be Keymod.
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