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Centerfire Rifles - Semiautomatic or Gas Operated Centerfire rifles, carbines and other gas operated rifles.

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  #1  
Old 05-07-2012, 8:38 PM
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Default Question on 6.8mm AR

Ok I just finished putting a lower together and as thinking of a 6.8mm upper. I am pretty new to the 6.8mm arena so not sure what the pros and cons are. Can I use my regular AR15 lower? Do I need special mags? Any help would be great! Thanks SEAN
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Old 05-07-2012, 10:10 PM
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You use the same lower as 5.56, but you need 6.8 mags, bolt, and barrel.

Take a look at PSA for some 6.8 uppers with good prices:

http://palmettostatearmory.com/index...te-uppers.html

Last edited by LAL6; 05-07-2012 at 10:12 PM..
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  #3  
Old 05-08-2012, 12:04 AM
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The mags are the same, just a slightly different follower.
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Old 05-08-2012, 12:19 AM
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What are you going to be using it for?
In other words why do you think you need 6.8?

6.8 is going to be harder to find and more expensive.

If you are primarily just plinking paper then IMO its not too practical but to each their own
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Old 05-08-2012, 12:52 AM
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6.8 is expensive, but most will use for hunting.
I believe 6.8 goes very well with carbine length AR's.

Whats your reason to go with 6.8? What are you trying to accomplish?
If its just for fun shooting, stick to 556/223.

If you want long distance with power, 308 will be great, but you can go 6.5 Grendel without braking your bank.

It all depends on what you want to go with.
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Old 05-08-2012, 4:51 AM
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I'm a big 6.8 fan but if this is your first AR then I would suggest you go with 556.
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Old 05-08-2012, 5:31 AM
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...

Last edited by killathrilla; 01-06-2013 at 9:30 AM..
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Old 05-08-2012, 5:45 AM
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Ok sounds good. I was looking for a plinker but something different from 5.56. But if that pricey I will stick with a 5.56
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Old 05-08-2012, 12:03 PM
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I have a Stag Arms 6.8 as my second AR. (First is 5.56)
Shoots MOA all day long, but ammo is about .80/round when you can find it. I buy it in bulk when it's available and re-load the cases.
I don't regret buying it, but, if it's your first AR, and just for plinking, I would recommend 5.56, then, later get a 6.8 upper to go with your current lower.
6.8 magazines are available and 7.62x39 magazines work just as well.
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Old 05-08-2012, 8:24 PM
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a 6.8 rifle isn't really expensive but the ammo is brutal unless you reload.

ar15performance.com has a lot of info as well as 68forums.com


get the spec II chamber or better if you do go that route.
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Old 05-08-2012, 9:34 PM
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I actually just finished build my 6.8.

Here's my link : http://www.calguns.net/calgunforum/s...d.php?t=567277

Sort answer to your question, YES you will need new mags. YES your lower will work just fine with a 6.8. I have a riflegear lower on mine and its good to go!

If you have any questions feel free to shoot me a PM
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  #12  
Old 05-08-2012, 9:39 PM
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Also don't let everyone scare you away from getting the 6.8. Yes ammo is more expensive but its a much better round than the 5.56 if your going to use it for more that shooting steel.

Ill be plinking and hunting with mine which is why I chose that round. 6.5 is also a great one but after some researched realized its more expensive and less common for parts (such as uppers and mags and reloading supplies)

bottom line paper punching-> 5.56
Hunting -> 6.8, 6.5 , .308
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Old 05-09-2012, 7:23 AM
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The 6.8 is NOT over-rated. It is actually one of the better intermediate cartridges you can stuff into the AR platform. The ammo is more expensive than 5.56. Duh. But you can pick up premium hunting ammo for less than similar loads in .308. And you can reload it cheaper than .308 as well. If you hand load, there is no reason not to get one. As the others have said, if you are planning on just punching paper, don't bother. 5.56 is cheaper. If you are planning on punching pigs or other medium game, I highly recomend it. In an AR, you have a potent hunting weapon with a light enough recoil that anybody can use it. And it drops pigs and deer like nobody's business.



This was last month in Texas. The pig was just a hair under 200 pounds. It was charging, and dropped within 5 yards of being hit once. 6.8 is NOT over-rated. Just some people can't seem to understand the difference between an intermediate and a full power cartridge...

-Mb
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  #14  
Old 05-09-2012, 4:41 PM
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love my 6.8spc and been hunting with it last couple years. excellent caliber up to 750 yards
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