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School me, AR build?

Discussion in 'Rifle Country' started by tarosean, Feb 18, 2012.

  1. tarosean

    tarosean Well-Known Member

    okay so I gave up nicotine 1 month ago after 26yrs of use, and it must be affecting me more than I thought. I purchased my first poly gun the other day and I ordered a LaRue stripped Lower and Upper.

    so what are my caliber options given the 5.56 lower I ordered?

    Of course this will be my first build and still not real sure of what all I need. krieger barrel and geissele or timney trigger will be next
  2. mljdeckard

    mljdeckard Well-Known Member

    What do you want to do with it?
  3. tarosean

    tarosean Well-Known Member

    hogs/plink. etc
  4. CraigC

    CraigC Well-Known Member

    First thing you're gonna need is some tools. What most folks who suggest building an AR always seem to forget is that you'll need $200 worth of specialized tools. You'll need wrenches for the delta ring, the barrel nut and the buffer tube locknut. Plus a torque wrench. You'll also need a receiver block and if building a flat-top or using a quad rail forend, you'll need the fixture that allows you to torque the delta ring while holding the upper rails perfectly aligned. A vise block is a good idea too. Not to mention a vise, if you don't already have one.


    I would also suggest a decent book on the subject. Of all the online write-ups I've seen, including the tutorials on AR15.com, I never saw one that didn't have a few missing details. For example, you will see virtually no reference to the torque specs required for the barrel nut or the tightening procedure.
  5. RockyMtnTactical

    RockyMtnTactical Well-Known Member

    lots of choices with caliber. Any reason not to consider the 5.56?
  6. tarosean

    tarosean Well-Known Member

    None at all.. just trying to get info on all the harder hitting options with the lower I bought. (Not at all interesting in 22LR or Pistol Calibers, etc.)
  7. madcratebuilder

    madcratebuilder Well-Known Member

    Lot of hog killers like both the 6.8 and 6.5G.
  8. Panzercat

    Panzercat Well-Known Member

    $200? Really?
  9. 68wj

    68wj Well-Known Member

    Yup, there are many options for your lower.

    Regarding tools, a punch set, some screw drivers, and a spanner wrench/armorer's wrench if you use a carbine stock. You will need a few other things if you build your upper, but their are so many standard, semi-custom, and custom builders out there that can provide your top half just the way you want it for about the same price as you could build it (sometimes cheaper).

    Definitely trading one addiction for another! Good luck.
  10. Redlg155

    Redlg155 Well-Known Member

    $100 in tools..max for tools. Your major expenditures will be a good quality armorers wrench and an upper reciever block. Having a good bench vise and a workbench is a given for any project. You only need a couple of punches that at most will cost you under ten bucks at Sears.

    Most folks have the rest of the tools needed as part of just being a guy. Allen wrenches, flat tip screwdriver, hammer, and electric tape. You may have to buy some high temp grease if you don't have any on hand. A torque wrench is not needed. Tighten, loosen and retighten the barrel nut 3 times and finally index the nut. If you can index the gas tube hole with one hand, you are not using enough torque. If you need to break out a cheater bar and huse gorilla like strength, you are using too much.

    In fact, with the exception of using my vise to start my trigger guard pin, I built my last lower on the couch.
  11. CraigC

    CraigC Well-Known Member

    To do it right. I'm sure plenty of folks will say they did it with a pair of vise grips and a hammer. My receiver and vice block set cost me $75 and the upper receiver block was $50. Wrenches are $20-$30 and you'll need two. So right off the top of my head that's $165-$185. Forgot to add that you'll need a punch set as well.
  12. gp911

    gp911 Well-Known Member

    A quick google search will show there are tons of options, but there are a handful that are most popular. Right now .300 BLK is the hot new thing, very similar to 300 Whisper but SAAMI-spec'd so it may become very popular even with non-reloaders. Others include 7.62x39, .30 AR, 6.5 Grendel, 6.8 SPC, :450 Bushmaster .458 SOCOM, .50 Beowulf, and so on. I plan on a .50 Beowulf soon and a .300 BLK once the hype dies down a little.
  13. HankB

    HankB Well-Known Member

    Perhaps if you buy & assemble every individual component yourself, but if you use a barreled upper, additional tools (over what you probably already have if you're a normal guy) are minimal - a handguard removal tool is handy but not essential, plus a stock wrench; less than $30 for the two.
  14. PPS43

    PPS43 Well-Known Member

    Add to it no-go and field gauge and you're over $200.
  15. Pindarslight

    Pindarslight member

    I've never been suggested 200$ worth of tools, I've been told vise block, punches, the AR-15 multi wrench which has everything on it to remove barrel nut, stock etc and a torque wrench though most don't use that. From what understand is headspace gauge isn't one of those super needed deals.
  16. Patriot1/3

    Patriot1/3 member

    You can always go LMT upper MRP and have the 6.8 cal as well. Change your bolt face to that paticular cal. You'll have to purchase the 6.8 mags as well. The barrels change out quickly. It's your best bet.
  17. BsChoy

    BsChoy Well-Known Member

    I'd have to second what Patriot1/3 says. If funds allow an MRP to switch cals is a great option. Otherwise I wouldn't rely on a 5.56 for all pigs. I would go 6.8 if its hunting/plinking. Hard hitting and a fair amount of ammunition choices on the market nowadays.
  18. PPS43

    PPS43 Well-Known Member

    It is not needed if you buy barrel and bolt together that are already headspaced by the manufacturer.

    If barrel and bolt come from different places headspace will most likely be fine, but there are rare exceptions. It's so easy to check, though, so why skip it. You can always sell the gauges if you no longer need them, or just keep them and let your friends borrow them.
  19. browningguy

    browningguy Well-Known Member

    My response is similar to PPS43, it's not super needed, only if you want to do it right, and safely. Many people also say you don't need a no-go gauge for rebarreling a Savage, but I have one anyway.

    If you are going to do something it's almost always worth doing it right. Headspace gauges, torque wrenches, etc., why bother doing it if you aren't going to do a good job.

    You are getting ready to build something that can blow up in your hands if not done correctly. How much are your fingers and eyes worth?
  20. Pindarslight

    Pindarslight member

    Like I said everyone I've talked to does it differently. Maybe not done with torque wrenches headspace gauges kryptonite screws or what have you, but what I've heard and seen none of that craziness is needed. It is what it is.

    No matter read these and do what you will either way good articles



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