Latest AR308 build should be @ 4.5 pounds - Page 2
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  1. #11
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    Default Custom carbon fiber handguard 2.79 ounces total

    Thanks to Jofus, I have the lightest 10.5 inch AR 308 hand guard. CF tube is 1.60 ounces and latest barrel nut 1.18 ounces.
    Last edited by breastroker; 03-12-2016 at 01:11 PM.

  2. #12
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    Two triggers will be used, for target shooting the SSA-E


    For possible hunting and lightest weight I use the New Frontier polymer Accutrigger

    Last edited by breastroker; 02-14-2016 at 12:20 AM.

  3. #13
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    So right now I am at 8.55 ounces for lower parts, so if the lower weighs 8.8 ounces than the complete lower will be @ 17.05 ounces with the NF polymer trigger set.

    It would weigh 18.60 ounces with the SSA-E trigger. Pretty freekin lite for an AR 308 lower. I like the 2A a thousand times better.

    The polymer AR 308 lower I got last month was 16.15 ounces with the NF polymer trigger and 17.2 ounces with the SSA-E trigger.

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  5. #14
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    How much is the new upper reciever cutting? I remember it was stupid light but not how much it actually weighed. Pretty soon ur gonna have to tie sandbags to ur 308 so it doesn't float away.

  6. #15
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    My extra Tactical Machining upper receiver was cut from 11.7 ounces down to 9.70 ounces. Probably going to put the JT 18 inch barrel on it eventually. I have the DPMS SASS barrel that needs a receiver too.

    But for this next AR 308 build I will be using the 2A Armament receiver set. Initially I will use the 33.8 ounce JT barrel for this build.

    But I will be getting the X-Caliber 16 inch barrel soon, if the exact same outer dimensions of the 2A barrel are used this 36.4 ounce barrel should be 2 ounces LESS than the JT barrel. Both use the same 416R barrel material, similar fluting. The gas block pad does not need to be 2 inches, modern titanium gas blocks are 1 inch. Want the muzzle end to be smaller with no bulge for the brake.

    So 31.8 ounces would be good, 30 ounces would be great. Would still be ridged with the fluting, and X-Caliber is match grade.

    I need a lighter barrel to get below 4.5 pounds. Faxon isn't selling or releasing their ultra lite 308 barrels yet. Boooo

  7. #16
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    Default BAD NEWS Xanthos receiver set is not 16.6 ounces

    Just got this from the 2A General manager:

    Upper is coming in right at 9.0 oz, Lower is 7.3 oz (in the white, not anodized, just measured, shouldn't change). That puts the set right at 16.3 oz,
    So I have to work hard and refigure the lower weight, wahh wahh!

    So right now I am at 8.55 ounces for lower parts pistol grip and stock plus the spring and buffer, so if the lower weighs 7.3 ounces than the complete lower will be @ 16.50 ounces with the NF polymer trigger set.

    It would weigh 18.05 ounces with the SSA-E trigger. Pretty freekin lite for an AR 308 lower

    Last edited by breastroker; 02-14-2016 at 05:50 PM.

  8. #17
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    My AR15 6.8 ultra lite weighs 3.26 pounds. But the only difference in the lower is about 0.2 ounces for the takedown pins and the Mag Tactical lower @ 5.845 ounces.

    I am beginning to see signs that this build will eventually be way under 4.5 pounds.

  9. #18
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    Now u just gotta drill holes in it to make it even lighter!!!

  10. #19
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    I was thinking about one or two holes in the bolt catch finger pad like BAD. unfortunately the BAD enhanced is way too heavy

    Also my official sight will be the Vortex Venom @ 1.1 ounces, but only for when the 16 inch barrel is on the rifle.
    As soon as I get the receiver I will use the old faith full Vortex Viper 8-24x50 scope, to see how the Hornady ELD-X ammo shoots in the JT 18 inch barrel on a 4.5 pound AR 308. Copper Creek Ammo loaded with Hornady brass and 4064 powder. It sucks they don't let you know how much powder they use, just colored bands. But I weighed all the ammo and they really only loaded 3 different loadings. So I expect they think they will be most accurate with the largest load of 4064.
    Last edited by breastroker; 02-15-2016 at 10:54 PM.

  11. #20
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    Lol I was kidding. I'm pretty stupid about a lot of things but even I wouldn't drill holes in that 2A set it looks fantastic. My new cf prepreg ships tomorrow so hopefully in a couple days I'll have a update on grip. I'm gonna be industrious weather warming up high 32 yesterday high in low 60s tomorrow! !! My omega suppressor supposed to be in tomorrow. Gonna throw it on my blkout coyote sbr and sight in my xsight. Might be able to try holing some puppies Saturday night.


 

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