AR Build

Discussion in 'AR-15 Discussion' started by ShagNasty1001, Nov 2, 2011.

  1. ShagNasty1001

    ShagNasty1001 New Member

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    I'm thinking of building a new AR in a larger caliber other than my 5.56 Smith & Wesson Sport. Any good lowers that can accept a .308 and up? And what about uppers? This is going to be my new hog rifle
     
  2. MrWray

    MrWray New Member

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    Caliber wise you can go with the 6.8spc, .308, or the .50 beowulf. Not sure of the price difference
     

  3. Redarrow18

    Redarrow18 New Member

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  4. ShagNasty1001

    ShagNasty1001 New Member

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    I know a guy who has a Beowulf and its one bad gun but he only has 1 round for it and he's been on back order for some for a long time. I do like the .308, that's what my 700 is in. The 6.8 also seems to be fairly good, haven't heard much on it though
     
  5. Jpyle

    Jpyle New Member

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    .308 or any round with an OAL beyond 45mm or so requires an AR-10 lower receiver. This limits your options to either DPMS or Armalite standards as their is no true Mil Spec for the AR 10 platform. .458 SOCOM, .50 Baewolf and 6.8 spc all fit AR 15 lowers due to shorter cartridge length.

    Pricewise add about 30% to the price of the build and forget about interchanging between parts and/or AR 15 uppers.
     
    Last edited: Nov 2, 2011
  6. ShagNasty1001

    ShagNasty1001 New Member

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    Well if the .50 and 6.8 fit into an AR-15 lower, I'm set on one of those then, I'd just have to get an upper
     
  7. Jpyle

    Jpyle New Member

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    Yep...upper, mags, although I believe the .458 fits a standard AR mag, and possibly an upgrade to a heavier buffer spring. Both rounds will pound the pizz out of a standard AR buffer and spring which could effect bolt cycle timing.
     
  8. ShagNasty1001

    ShagNasty1001 New Member

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    I know I said larger caliber but I was also checking out a 5.7 upper I ran across a week or two ago. Any input on that?
     
  9. FCross7

    FCross7 New Member

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    From what I've heard the 5.7 has about the same ballistics of a .22 Mag. Maybe someone can clarify that.

    If I was to get an upper in a different caliber with the purpose of hunting, it would probably be a 6.8. I live in Florida and all the wildlife here is relatively small. A 200 lb buck is huge down here, so I have no need for anything as big as a .458.

    -Fred
     
  10. ShagNasty1001

    ShagNasty1001 New Member

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    Yeah the deer here in Oklahoma aren't too massive, but our hogs can get up too size. (approx 800lb for a few, normally 3-400)
     
  11. ttdub

    ttdub New Member

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    How could you want something bigger than the .223? It's huge! Just kidding. The .308 is pretty good from what I've heard.
     
  12. fsted2a

    fsted2a Active Member

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    A .40 S&W round might be a thought. Readily available, and some good knockdown power. Just my .02.
     
  13. mjkeat

    mjkeat New Member

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    .308 is a good round, easily found, not to expensive and a wide veriaty of rounds.
     
  14. ShagNasty1001

    ShagNasty1001 New Member

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    Yeah I love my Remington 700 in the .308, I just want a large caliber AR platform as well
     
  15. FCross7

    FCross7 New Member

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    The .308 ARs are nice. I wouldn't recommend building one though. I did some research into it a while back and it's a pain to build one because you have to be sure all your parts are compatible.

    You have two main patterns; DPMS and Armalite. To top things off, DPMS changed their receiver a few years into production switching to a taller upper receiver, so you ordering parts for it you have to make sure you're getting the right stuff.

    When I get one, I'm not gonna build, I'm just gonna buy a complete rifle to save myself the headache of parts compatibility.

    -Fred
     
  16. tommixx

    tommixx New Member

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    how do the lowers hold up under the heavy recoil. my neighbor's son was on a sniper team in Iraq he said that the don't hold up. I was just wondering
     
  17. mjkeat

    mjkeat New Member

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    He's the first then. AR10 style rifles have been in service in the civilian and military world for some time now.

    FCross7, it's as simple as buying a matched set or simply asking the supplier what pattern it is.
     
  18. FCross7

    FCross7 New Member

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    The barrels and hand guards have to be matched up too. I'm not saying it can't be done, it's just not worth the extra hassle to me, and it's not going to save much money, if any, over buying a complete rifle.

    -Fred
     
  19. mjkeat

    mjkeat New Member

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    Very true. Knowing myself though I'll end up changing this or that and spending more than i should.
     
  20. FCross7

    FCross7 New Member

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    Same here. I've actually been eyeballing that LMT 308, but I don't have ~$2400 to drop on a rifle right now, plus I wanna get my Spike's set up the way I want it first.

    -Fred