[ARCHIVED THREAD] - Geissele super duty meltdown autopsy now with HBAR and URGI NEW GFR 6 arc at 1,000 yds video! (Page 1 of 7)
Posted: 8/10/2024 6:54:21 PM EDT
Recently, a YouTuber goldenwebb did a meltdown test of a super duty. It did the best out of all the ARs they’ve done this “test” to. Fired almost twice as many rounds as the KAC could handle. Video can be found here: Geissele Super Duty Meltdown Apparently, Geissele asked for the upper back so they could to an autopsy on it. They take an in depth look at what failed and why, and came up with an interesting challenge at the end of the video. Video can be found here:  GOLDENWEBB SUPER DUTY MELTDOWN AUTOPSY I found it really interesting. Figured some of you on here would as well.  Updated Geissele HBAR meltdown video here:  Geissele Super Duty HBAR Meltdown New URGI meltdown:  Geissele URG-I Meltdown New GFR 6mm Arc at 1,000 yards video by 9-hole reviews!  ??GFR [Geissele 6mm ARC] to 1,000yds: Practical Accuracy [Tangent Theta 3-15] |
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I was really disappointed on how long the KAC he tested made it. But, it's always been known your MOA will open up with their profile pretty quick, expected them to last longer though. I'd have liked them to scope the barrel, just out of interest. I'm a hodge profile guy myself, which many makers do as well... DD is slacking on their profiles. |
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Quoted: I love my G rifles. They are perfect. https://www.ar15.com/media/mediaFiles/236406/IMG_9405_jpeg-3291180.JPG Those rifles look familiar And yes, they are perfect. |
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Quoted: Yep Hope one day to see our military carrying full Geissele rifles. I don’t think geissele has the production capacity to make that many rifles and maintain their civilian sales and the high level of quality they are known for. It’s still a relatively small company. |
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Quoted: They are half price a couple times per year. You will not find a better value in the gun world. Quoted: Quoted: Definitely high-quality stuff...unfortunately, out of range of my budget!  They are half price a couple times per year. You will not find a better value in the gun world. Most of my G items I was given in exchange for vomitting peeps and mountain dew, like your photos. :-) Attached File Attached File |
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Quoted: Should make provisions in the upper handguard for support of the gas tube. Slots or holes drilled across the forend, a few custom bolts with a cradle to support the tube. Can't droop. Why? Blowing out the gas tube first means the rifle is still good to go |
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Q: why hasn’t anyone come up with a better gas tube? Heavier weight, or with radiating fins to dissipate the heat faster/better? I know we’re talking freaking superhot jets of gas here, just curious. I’ve seen other meltdown videos and that’s the place that seems to fail first in the better quality AR pattern rifles. |
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Quoted: Q: why hasn't anyone come up with a better gas tube? Heavier weight, or with radiating fins to dissipate the heat faster/better? I know we're talking freaking superhot jets of gas here, just curious. I've seen other meltdown videos and that's the place that seems to fail first in the better quality AR pattern rifles. Makes sense to me, esp considering the AR isn't really supposed to be an LMG. If you can't kill it with 901 rounds of continuous fire, it's probably time to change tactics anyway 
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Quoted: Im seeing a few guns and parts to use straight gas tubes instead of regular style as they say often the gas tubes fail at the bend. At the end of the Geissele video they show that they’re sending GoldenWebb a new upper to test. This one with a heavy barrel and a thick straight gas tube. Really curious to see what happens! |
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Quoted: Why? Blowing out the gas tube first means the rifle is still good to go Quoted: Quoted: Should make provisions in the upper handguard for support of the gas tube. Slots or holes drilled across the forend, a few custom bolts with a cradle to support the tube. Can't droop. Why? Blowing out the gas tube first means the rifle is still good to go Maybe the last badguy didn't happen to die when the gas tube gave up from heat+gravity? |
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Quoted: Q: why hasn’t anyone come up with a better gas tube? Heavier weight, or with radiating fins to dissipate the heat faster/better? I know we’re talking freaking superhot jets of gas here, just curious. I’ve seen other meltdown videos and that’s the place that seems to fail first in the better quality AR pattern rifles. Have there ever been reports of an AR based rifle failing due to gas tubes or sustained full auto fire during actual use of the weapon outside of a guy with a glove mag dumping them for clicks? I can’t think of any. Doesn’t mean it hasn’t happened, but… |
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Quoted: Why? Blowing out the gas tube first means the rifle is still good to go Quoted: Quoted: Should make provisions in the upper handguard for support of the gas tube. Slots or holes drilled across the forend, a few custom bolts with a cradle to support the tube. Can't droop. Why? Blowing out the gas tube first means the rifle is still good to go This, it’s a safety valve. Gas tube blows out, it’s a $15 part swap. A fairly easy one with the G rail, too. Even so, gas tubes usually last what, 600-800 rounds of nonstop F/A? And LW barrels only last a couple hundred more than that before exceeding the heat treatment threshold. Barrel loses its heat treat, it can pop at any time, which is bad news. It could pop immediately, or it could cool off and last another hundred rounds, only to suddenly explode out of nowhere. |
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Quoted: Maybe the last badguy didn't happen to die when the gas tube gave up from heat+gravity? Quoted: Quoted: Quoted: Should make provisions in the upper handguard for support of the gas tube. Slots or holes drilled across the forend, a few custom bolts with a cradle to support the tube. Can't droop. Why? Blowing out the gas tube first means the rifle is still good to go Maybe the last badguy didn't happen to die when the gas tube gave up from heat+gravity? In a situation where 1k full auto rounds didn't solve the problem then your AR blowing up in your hands is also probably not going to solve anything either. |
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Quoted: In a situation where 1k full auto rounds didn't solve the problem then your AR blowing up in your hands is also probably not going to solve anything either. Quoted: Quoted: Quoted: Quoted: Should make provisions in the upper handguard for support of the gas tube. Slots or holes drilled across the forend, a few custom bolts with a cradle to support the tube. Can't droop. Why? Blowing out the gas tube first means the rifle is still good to go Maybe the last badguy didn't happen to die when the gas tube gave up from heat+gravity? In a situation where 1k full auto rounds didn't solve the problem then your AR blowing up in your hands is also probably not going to solve anything either. As far as I know they haven't tested for when the bullets rupture the sides of the barrel. They may very well have hundreds or thousands more shots before the next item breaks. The gas tube failing so spectacularly when all of the other components seem mostly unharmed and still functional says to me they are leaving some on the table. Standard gas tube could very well be the 5amp fuse in an otherwise 50amp allowable system. Furthermore, G is playing with ideas and tweaking things to push the limits, removable threaded support bolts for the gas tube was my suggestion. It's not even impractical to do nothing to a super duty except drill and tap the handguard in a few spots and install bolts once installed to get extra life out of the tube in the most extreme circumstances. |
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G did good! I’d still rather carry a 6720 all day than ANY heavy barreled 10 pound gun. As others have said, I’m not sure of any real life application where an AR failed in combat from prolonged full auto. It’s a fun thought experiment, but for me, I just need it to go bang reliably. I’ll take 300 rounds, as long as it goes bang next 300 rounds. |
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Quoted: Aside from generating YouTube traffic, I can't see any practical results from this sort of testing. Kudos to Gissele for being interested in where it failed. Same. I could see a manufacturer doing this kind of test to see if the gas tube will indeed fail first. Other than that this is just useless clickbait. |
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Quoted: Right. We want the cheap gas tube that takes 2 minutes and 1 punch to replace to be what fails instead of needing to replace a bbl Quoted: Quoted: Why? Blowing out the gas tube first means the rifle is still good to go Right. We want the cheap gas tube that takes 2 minutes and 1 punch to replace to be what fails instead of needing to replace a bbl I think people are missing the fact that the barrel was also drooping. While you may get some more rounds out of that barrel, I doubt you are getting any accuracy. It was fried by the time the gas tube let go. |
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Quoted: Have there ever been reports of an AR based rifle failing due to gas tubes or sustained full auto fire during actual use of the weapon outside of a guy with a glove mag dumping them for clicks? I can’t think of any. Doesn’t mean it hasn’t happened, but… Quoted: Quoted: Q: why hasn’t anyone come up with a better gas tube? Heavier weight, or with radiating fins to dissipate the heat faster/better? I know we’re talking freaking superhot jets of gas here, just curious. I’ve seen other meltdown videos and that’s the place that seems to fail first in the better quality AR pattern rifles. Have there ever been reports of an AR based rifle failing due to gas tubes or sustained full auto fire during actual use of the weapon outside of a guy with a glove mag dumping them for clicks? I can’t think of any. Doesn’t mean it hasn’t happened, but… Not to sound argumentative - I don’t mean it that way at all - but since people keep talking about he gas tube being the weak point, I just was curious if beefing that up would help it last longer in extreme situations. |
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Quoted: Not to sound argumentative - I don’t mean it that way at all - but since people keep talking about he gas tube being the weak point, I just was curious if beefing that up would help it last longer in extreme situations. A mil spec gas tube will last plenty long in any extreme situation you find yourself in.  |