Nobody mounts optics or aiming devices to negative spaces, with the exception of some lasers. Navy tested 'em though and found mlok to be superior to keymod but that they both were adequate for what they were designed to do, solid, etc.
Ar15 kac keymod accessories upgrade#
They both have their pros and cons, I never thought one so superior I felt I needed to modify and upgrade all my shit over it. The negative mount space has a lot going for it, less weight and size, and if you're not using the space for anything at all then it really makes a difference. it can go on the side and it doesn't matter if it holds a zero as long as it doesn't go anywhere. An aiming laser usually goes on the top rail where if it's just for the illum.
Ar15 kac keymod accessories full#
Coupled with a full length rail on top and something adequate to handle a vert grip at the 6 and all is well. how we THOUGHT we'd use 'em, it's interesting to see how some military mfg.'s have gone to plastic rails -IWI and FN for two, and I gotta admit, for what we do use them for it really doesn't matter. Still, URX4 is a one piece unit and it's that which makes it as solid as it is.īecause of how we USED rails vs. That PEQ is ziptied on and the KAC rail sections come with loctite on the screws already, not to mention they go on pretty snug. And I'd argue anything mounted on a rifle that isn't a range toy needs to have zipties, tape or 550 cord or some combination of the three. I'd argue you need loctite on ANY screw that's on a firearm though. Navy tested 'em, found mlok to be better than keymod but that they both hold shit adequately.
It can obviously handle the weight, I love these things, mlok or keymod but came to prefer mlok over time: But Docsherm explained what I had in mind so I won't repeat it. KAC fanboy? Maybe, I'm a fan of the best so as long as they occupy that pedestal, then yeah, I guess I am.
I don't know of any but I'm sure they're out there. URX4 would be easy to knockoff, if you found one made of the proper materials and with the proper geometry then IMO it'd be hard to go wrong.
But heavier and costlier than URX4 (until you include the rail sections and accessories, then it puts URX4 about the same pricewise). KAC match rail and PRI -Second best, they index and lock up well. That one will be your number one whether you like it or not. Torques on VERY tight and indexes with shims a lot like a muzzle brake does. A one piece construction that makes the upper essentially a monolith. KAC URX 4 for the best -lightest, strongest, most secure.
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