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Thread: Replace 10" KMR Alpha - Which M-Lok rail?

  1. #11
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    Quote Originally Posted by gunf1ghter View Post

    I would consider the new 10" URX4 but according to KAC website it is heavy as hell and you've got that whole proprietary barrel nut that requires a $150 wrench. So, yeahhh.
    Incidentally, the URX 4 Mlok weighs about 10.5 oz and has an integrated barrel nut. It also comes with the armorer's wrench/nut. So you might take a second look.

    Personally I am really wishing Daniel Defense would release their MRF SLimRail XS (10" Mlok they had at SHOT). It was due Q2 and I have a naked 12.5 build that really needs a set of trousers before he can go outside.

    If I have to bite the bullet I will probably get an SLR Ion Lite (they come in about every length conceivable) or the URX4 10.75.

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  2. #12
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    The latest mw has a key to prevent rotation

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  4. #14
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    SMOS M-Lok version $195. The 9.1" version weighs in at 10.8oz with hardware. Link

    The Noveske NSR - M-Lok version is about $250ish. The 9" version weighs in at 8.7oz w/barrel nut, but is currently out of stock. Link

    You can call Noveske to check availability at 541-479-6117
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  5. #15
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    Another option is the EraTh3 M-Lok handguard. I have one (12") on my lightweight build and I love it. Link
    “I predict future happiness for Americans, if they can prevent the government from wasting the labors of the people under the pretense of taking care of them.”
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  6. #16
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    I just picked one of these up for a new upper and it is pretty much a Noveske NSR, but Griffin has integrated the sling swivel cups into the rail/barrel nut. The Griffin barrel nut is also a bit lacking when it comes to how it is heat treated. Other than that, I really like the rail.
    Last edited by drtywk; 08-23-16 at 17:54.
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  7. #17
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    Quote Originally Posted by gunf1ghter View Post
    I would consider the new 10" URX4 but according to KAC website it is heavy as hell and you've got that whole proprietary barrel nut that requires a $150 wrench. So, yeahhh.
    For an 11.5" barrel, KAC also has a 10.75" URX 4. The URX 4 comes with the installation wrench (which is not the same as the URX 3.1 wrenches). The only real issue, IMO, is that the OD of the URX 4 is a bit larger than the KMR. It's really not all that heavy, considering how it's a fair bit beefier than the KMR/KMR-A.

    Depending on you budget, I'd also consider the Mega WedgeLock, VSeven Enlightened M-LOK, SLR ION Lite, SMOS GFY, Midwest Industries G3, and Centurion Arms CMR M-LOK.
    Plus ça change, plus c'est la même chose.

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  8. #18
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    Quote Originally Posted by gunf1ghter View Post
    I have three BCM uppers with the 10" KMR alpha and I've got the fever for the flavor of the Pringles, err M-Lok with one of these uppers after messing with a buddies M-Lok setup.

    What to buy? I like the seven sided shape of the KMR a lot so am looking for something as close as possible in M-Lok. I may or may not swap the gas block at the same time to an adjustable since my Griffin Recce 5 gets out of jail soon.

    I was going to get the Geissele MK8 but it is just a little heavier and chunkier than the KMR. At least from what I've read.. Nobody local to me sells them.

    Another option is the 10.5 Midwest Industries rail.. Not sure if it will allow enough clearance for the suppressor but they make a 9 inch model also. My local armorer loves them but I don't see much comment on them online one way or the other.

    I would consider the new 10" URX4 but according to KAC website it is heavy as hell and you've got that whole proprietary barrel nut that requires a $150 wrench. So, yeahhh.

    Any thoughts from the brain trust?
    Let me ask you a dumb question... You like the KMR's weight, shape and attachment method. Why do you want to change it? Does the the M-Loc kool aid taste that good? I just don't see what M-Loc does better.

  9. #19
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    I did both mlok and keymod. Functionally the same, but the mlok accessories from magpul were great.

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  10. #20
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    I handled a rifle with the Geissele rail last night and I liked it. It seems well made and solid, a bit heavier duty than my KMR. But I don't see any reason to go to M-Lok. KeyMod stuff works great and I've yet to find anything I want that's not available that way.

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