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Screaming Deals on Armalite Barrels

T
LRRPF52 said:
One thing I would change for the dimensional specs on an 11.5” heavy barrel would be using 5/8x24 threads vs 1/2x28. It’s a big step down in mass when you want the benefits of a heavy barrel that is heat-tolerant, that you are sacrificing extra weight in-favor of better grouping at reasonable distances.

A tight-fit muzzle device and suppressor will mitigate that a bit, but I still don’t like such a dramatic change in barrel profile with the step down to such a small threaded muzzle. It’s just begging to absorb a lot of the heat load and bell out. Chrome-lining and CMV steel help counter that, but any advantage would be good in that area.

For gassing, you can choke the flow of a large port back at the carrier with a Bootleg. Instead of going to heavier buffers, try extra power spring weight in the action spring. I use standard buffers and extra power springs more now, after feeling and seeing how well that manages the cyclic rate.
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The whole thing with the 1/2x28 threads on a heavy barrel has always been something that bothered me. I've heard the notion of mitigating this with a muzzle device. What also worries me is overtightening the muzzle device and I dont think I've ever found a definitive torque spec on muzzle devices. If it matters, I always time my muzzle devices with shims.

As for controlling gas, we'll have to agree to disagree regarding using springs to affect closed bolt lock time. Nevertheless, I do agree that controlling gas flow is the way to go. Although I'm trying to get away from using "controls", my chosen method thus far has been riflespeed gas blocks. I think they truly are the best thing going.
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PortaJohn

V
armorpl8chikn said:
Is this a joke?
Can they also shut off the supply of sailboat fuel?
I am not a smart man, but i know what a nuclear sub is.
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Must be (LOL). They do refuel nuclear carriers at sea, but it's jet fuel for the aircraft. What "fuel" would a nuke sub need from Norway? My understanding is that they are launched with enough nuclear fuel to last the lifetime of the hull, with diesel only used to run backup generators IF a problem develops with the reactor. The story is highly suspect.
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