Twist rate or gas length: what's more critical? [Archive] - Glock Talk

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Henry's Dad
02-05-2012, 21:12
I'm looking to get a 6.8 upper for a DIY assembly.

In my price range (<$600), I can find mid-length with 1:10 twist, or I'm finding carbine length with 1:11 or 1:12.

After my crash research efforts, it seems the ideal set-up would be mid-lenth with 1:11, but I'm not finding those in my price range.

My gut is telling me to go mid-length and live with the 1:10 twist, but I'm wondering what is generally more important for performance of the 6.8 platform?

Am I making too much of one or the other (twist vs. gas)? Is it a wash if one or the other is not "ideal"?

Thanks in advance for your input.

WayaX
02-05-2012, 23:09
Check out this:

http://www.ar15performance.com/6_8_arp

It is right at $600 but it will give you a good building block from which to expand.

The owner of the site is Contstructor on GT.

TheBelly
02-06-2012, 00:15
I completely agree with going to AR Performance.

Phenomenal weaponry. My 6.8 upper is more accurate than I am.

PlasticGuy
02-06-2012, 10:51
I would insist on both. It is a cartridge that is still maturing. I would not want to buy a rifle that is out of spec the day I take it home.