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AR15 Question

RobOzRobOz Member Posts: 9,523 ✭✭✭
edited June 2013 in Ask the Experts
I have a fellow who wants to trade an AR for another item I have and has given me the description below. He has two AR's for trade, but I really don't know what 6.8 SPC is, or stands for.

"I've got one in 6.8 SPC and one in 5.56/.223."

I already have an HBAR Colt, but would not mind having another to shoot, I just want to understand the difference.


EDIT:

I did a search on 6.8 in the forum. Disregard my inquiry.



EDIT II
Armalite,
Thanks for the description. Now, I need to decide if I should trade for the 6.8 or the 5.56. Since I akready have the 5.56 in the HBAR model, I may make the trade for the 6.8. Who knows, the ammo looks pricey and it may be just another "gimick" like the 45GAP. A round that may be harder to get as time goes on.
Thanks,

Aaron
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Comments

  • RobOzRobOz Member Posts: 9,523 ✭✭✭
    edited November -1
    AM CONSIDERING THE PURCHASE OF AN AR15 ,LOOKING AT OLYMPIC ARMS 223 PLINKER AND ARMALITE M15 A4 FLAT TOP. THE OLYMPIC IS ABOUT 250.00 CHEEPER,,IS IT WORTH THE SAVINGS? DO THEY BOTH ACCEPT STANDARD AR15 ACCESSORIES ,CLIPS,SIGHTS,FURNITURE ETC. THANKS,,,,,

    RONK7716@CS.COM
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  • RobOzRobOz Member Posts: 9,523 ✭✭✭
    edited November -1
    I was at the range today and after a couple hundred rounds my gun would not a pick up a round from the magazine. I tried 2 Lancer and one PMAG. With the bolt open and the bolt release pressed it will chamber a round like it should and go bang, but will go click on the second. Every thing looks right when I took it apart.
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  • RobOzRobOz Member Posts: 9,523 ✭✭✭
    edited November -1
    i am pretty new to this firearms thing, bought my first pistol as a christmas present for myself this past year. anyways i have been considering buying an ar15 and asked a more knowledgeable friend which way he thought was the best to go. his response was build your own and recommended american spirit arms. after reading on another website's forum where asa was basically trashed i wanted to hear some unbiased or biased from another site opinions on the best route to go for a first timer. i hope this doesn't come across as just plain stupid. thanks for taking the time to read this.-dave[:I]
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  • RobOzRobOz Member Posts: 9,523 ✭✭✭
    edited November -1
    Now I have only owned 1 AR, my current one buily on a Colt A1 upper and a Stag Lower. Here is the one thing about it that bugs me. When I shoot the thing it just feels odd, like it a wobbling action that almost feels like its pogo stickign off my shoulder a little. Is there a way to get around this? I have heard of bolt bouncing with ARs, and I figure it may be this. It defineately is a separate feel from the initial recoil, kind of like a Browning A5 has the two hit recoil, but it feels like this gun is pulling forward and wobbling. Its hard to describe, but being an HK91 and FAL man I figured I would ask around.
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  • RobOzRobOz Member Posts: 9,523 ✭✭✭
    edited November -1
    Should the Ar15 be able to cock with the safety in the "Safe" position?
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  • iceracerxiceracerx Member Posts: 8,860 ✭✭✭
    edited November -1
    Reloads? Factory ammo? Surplus?

    Might need a lighter recoil spring or it might just need some lube.

    Sounds like the bolt is not traveling far enough rearward to pick up the next round.
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  • charliemeyer007charliemeyer007 Member Posts: 6,572 ✭✭✭
    edited November -1
    Are you fully seating the magazines? Look at the magazine release. Do you seat the ammo to the rear surface in the magazine but smacking it on the backside with the heal of your hand?
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  • RobOzRobOz Member Posts: 9,523 ✭✭✭
    edited November -1
    I think I'll give it a real good cleaning and lube. I know it's not the hand-loads, I have fired at least 300 from the batch.
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  • tsr1965tsr1965 Member Posts: 8,682 ✭✭
    edited November -1
    One thing you want to look at, is if it has a pinned on gas block, or one secured by set screws. If the latter, they can become loose, and the gas block move, restricting your gas flow. For the most part, those set screws are red Loctited in, but we all know, heat will soften it. Had it happen several times on a friends AR-10 that he purchased as a rifle that was "CUSTOM" built from an array of parts. Of course they were assembled by BUBBA.

    Best
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  • azpowerwagonazpowerwagon Member Posts: 376 ✭✭✭
    edited November -1
    Outside of the obvious, a good cleaning may help. Don't forget a good blast of brake cleaner down the gas tube. Check that the key on the carrier is not loose. If it functioned previously with the correct springs, do not change them.
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  • asphalt cowboyasphalt cowboy Member Posts: 8,904 ✭✭✭✭
    edited November -1
    quote:Originally posted by azpowerwagon
    If it functioned previously with the correct springs, do not change them.


    +1

    As was mentioned check for loose carrier key and gas block.
    Also look at the end of, and inside, the key for odd wear or damage. Check the rear of the gas tube also. A misaligned key or tube with damage/wear wont seal properly.
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