AR 7.62x39 Building

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Posted: 9/6/2016 11:03:25 AM EDT

I am researching and i was told if i built a AR 7.62x39 at 12.5-inch barrel length is a good way to have stability for that caliber than short length barrel?

Posted: 9/6/2016 9:22:22 PM EDT

[#1]

What?

Posted: 9/6/2016 10:28:15 PM EDT

[#2]

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Quoted:
What?

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I think he means 14.5 over an SBR? Please clarify OP

Posted: 9/7/2016 1:01:05 AM EDT

[#3]

Can you please provide more information.

I am planning to assemble a 12.5" barrel, 7.62x39 upper assembly with the Adam Arms piston system.

Posted: 9/7/2016 7:15:11 AM EDT

[#4]

Look into a Black Rifle Arms. Their system was designed around the 7.62x39 caliber. 11.5" Black Rifle Arms Shooting at 100 yards at Metal Targets

Posted: 9/8/2016 7:34:17 AM EDT

[#5]

thanks what they told me is that 12.5-inch barrel of 7.62x39 can be a stable shooting and more accuracy than any shorter length is it true whats your opinion ? i seen your video link too

Posted: 9/8/2016 2:03:20 PM EDT

[#6]

Quote History

Quoted:
thanks what they told me is that 12.5-inch barrel of 7.62x39 can be a stable shooting and more accuracy than any shorter length is it true whats your opinion ? i seen your video link too

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I don't think accuracy will suffer, but this is what you give up in velocity:

Posted: 9/8/2016 6:53:20 PM EDT

[#7]

thanks i am checking it out

Posted: 9/9/2016 9:30:55 AM EDT

[#8]

Take a look at these uppers. I haven't shot it past 100 yds yet, but it's pretty accurate at 100, with a red dot. They claim accuracy to 200 yds.

Posted: 9/9/2016 11:12:06 AM EDT

[#9]

No way that I would spend that much cash for a 7.62x39. I would build a .300AAC (I did), and then a Grendel (on the list).

I will continue to enjoy my 14.5" Colt 7.62x39 that I got for very cheap on the EE. It was a neutered 16" that I practically stole and then had Adco make a correction.

Shown here with HVT:

Posted: 9/9/2016 1:41:29 PM EDT

[#10]

Anything past 150 yards and you start "lobbing" shots with a 7.62x39 through a 16" barrel. Now consider the velocity loss of a 12.5" barrel.

I have built 4 7.62x39 ar15 variants and while they are fun to shoot, I wouldn't rely on them to be accurate past 150 yards.

Posted: 9/12/2016 12:34:29 PM EDT

[#11]

Thanks for the info i need to understand and learn more buy i see whats your saying

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