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Thread: The lightest lightweight AR lower receiver

  1. #21
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    I can help with the math: 2.34% weight savings for an 8lb rifle.

    Some engineers want their racecars to break on the cool down lap. If they didn't that meant they were over built.

    You can carry that mindset to a fighting rifle but I think most folks would rather have survivability.

    There are pros and cons to everything you do with respect to setup. Switching to 20 round mags will save more weight than 3oz. Why not use 10 round mags?

  2. #22
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    Thanks for the math help, I'm not sure what I typed in my calculator. Probably lost it in the conversion. For the record I like the idea of a lighter lower. While we were on the topic of lightening guns I wanted to know about wether titanium would work for a barrel. Shaving weight off the front to reduce the moment of inertia is where the real benefits come in IMO. The AR's "pointability" is what attracted me to it in the first place.

  3. #23
    Dano5326 Guest
    When the upper & lower come as a set (ideally an upper w/o fwd assist) I'll build one. ASSuming similar weight % reduction in the upper.




    I think this would be even more interesting in a 7.62.. with the greatly increased size of the receivers.. Eventually a 7lb, (.8-1.25MOA) 16-17", reliable, (naked) AR format gas gun will arise.

  4. #24
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    Quote Originally Posted by markm View Post
    Because the forged lower is just SO HEAVY!!!

    This stupid thing will sell like a MOFO too.
    my thoughts exactly

  5. #25
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    BCM's new rail is made out of a magnesium alloy.

    food for thought

  6. #26
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    3 oz lighter lower?

    DO YOU EVEN LIFT
    Gun and Gear Reviews- www.almosttacticalreviews.com

  7. #27
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    As they kept the price point reasonable, I think it has merit esp. if combined with a similar built upper and a pencil barrel, light furniture, Aimpont mico, and a light(weight)-light.
    "The world's a dangerous place – we can help." -www.portlandfirearmtraining.com
    NRA LE Handgun-Shotgun Instructor/Life Member

  8. #28
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    Yeah, 3 ounces isn't much by itself. But ounces become pounds, particularly over long distance stretches. I humped large amounts of weight in Iraq for the Army, and am currently carrying a 72 LB load out for a different organization in Afghanistan. If you can reduce my load by a few ounces here and there, without decreasing the reliability (and that is a big "if") I am all ears. I would absolutely look at it as an addition to a lightweight build.

  9. #29
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    Quote Originally Posted by Tzook View Post
    3 oz lighter lower?

    DO YOU EVEN LIFT
    It's not that the AR is too heavy as it is, it's that we can make it lighter anyway.

  10. #30
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    Quote Originally Posted by markm View Post
    Because the forged lower is just SO HEAVY!!!

    This stupid thing will sell like a MOFO too.
    Exactly. This will just screw up the balance.
    I must study politics and war, that our sons may have liberty to study mathematics and philosophy. - John Adams

    The AK guys are all about the reach around. - Garand Thumb.

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