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That's not an Armalite AR-10 rifle gas tube. They measure 12 1/16", not 12 1/8". It's obvious that your gas tube is too long, so in light of that, who did you order this gas tube from (what vendor), and what's the brand of it - the manufacturer's name? << That's important information, for the future, for everyone on this message board. ^^^ This right here is equally important. What brand is your barrel, and what vendor did you get it from? Without that information, we really can't help much.

Is this their specs, or have you measure this out? Buffer should be 5.200" long, so that buffer bumper on the end needs sanded down 0.100" to get the buffer right. 5.6oz if tough to do in a standard .308 AR rifle buffer, most come in at 5.4oz. That's just what you can work with, in the space that you have to work with it. Get rid of the Aero spring that came with that kit, and put in a known, verified, good spring. Choices are Armalite EA-1095 spring, or the Sprinco Red spring. Those two. Or nothing. Rifle receiver extension should be exactly 9 11/16" internal depth. Not close - right on. ^^^Check that stuff first. Verify it. Those simple changes will bullet-proof your Recoil System. ^^^ Next up is this stuff. Gas system. Gonna need to know that barrel gas port diameter. A cheap set of numbered drill bits (get the whole indexed set at Harbor Freight, if need be) will have that you need to measure that gas port diameter. You'll know what clears, and the next one up that doesn't, and that will give you a pretty accurate gas port diameter. Good job changing out that gas tube right away - that's an important step that many think isn't important. Post the info up on confirmation of this stuff, and we'll figure it all out.

This is still the king...

At this point in time - is when "Ricky" gets re-named into "Delicious!..."

Part of my history. Canadian sister-unit to 1st Special Forces Group (Airborne) is 3PPCLI, the Canadian unit - 3rd Princess Patricia's Canadian Light Infantry. Every year we had a Menton Day week-long festivity, surrounding 5 December, and the 3PPCLI came to Washington State. 5 December is the important date, because on 5 December 1944 was the inactivation of the First Special Service Force, in Menton, France. We had events all week long with them, joint training a competitions, which ended in a Formal Ball at the end of it. It was always amazing, and a true piece of history. It was the birth of Special Forces, that relationship at the time, during WWII. Here's a SOFREP Article on Menton Day: https://sofrep.com/news/menton-day-respect/

Post links to what you're thinking about buying. That's the easiest way for us to look at what you are looking at.

^^^ That's the truth, right there. The whole statement, but the part specifically about adjustable gas blocks. I don't own a single adjustable gas block for any AR that I have. Not one single one. Get the gun to run, and you don't need one. Just figuring a caliber out is why I have so many weird calibers in these things. Balance the Gas System to the Proper Recoil System for the large frames, because that's the heart of your reliability, right there. Barrel configuration and caliber play a big part of that - but we've pretty much got all that figured out by now, from examples here on the board, and getting those guns running, just over the years.

I hate you guys...

14 calibers, unless I forgot one. That does happen. I forget about some guns, sometimes. Not my fault, really. These are just the AR calibers. This doesn't include shotguns, bolt guns, pistols, etc. I reload for 22 or 23 calibers, IIRC. Have to look at the die stack to be sure. 6 arc 6.5 grendel 224 valk 9mm 45 acp 22lr 5.56 300blk 25/45 sharps 308 win 260 rem 338 fed 358 win 7mm-08

Many years ago, here on the board, we had a very well known buffer manufacturer come on here and rip us apart, telling us we didn't know anything about recoil systems - based on some whiner on another message board complaining about us. That was a defining moment for me, and I determined that I would be the smartest motherfucker on the planet on recoil systems, after that. But that went sideways, because there's another part of recoil systems. Gas systems. If you don't balance those two systems, your rifle will not work properly. So, in a nutshell, I delved into recoil systems, gas systems, learned everything I could online (people's posted problems), used my own research and information on what I'd built and done, and really started understanding it. At that point, the lightbulb went on - this is all math... Nothing more. I have over 40 ARs total, in 12 or 13 different calibers. It was beneficial to me to learn this, and not just throw away ammo money figuring it out the hard way. Based on that experience, that gives me the ability to inquire about someone's build, ask specific questions about the details on their parts selection - and be able to tell them if their gun is gonna work - or need work, to work. It's been a long journey, but worth it. I have no idea how many guns I've fixed over the internet, just from typed words, when given the proper information to do so - but it's in the hundreds, just right here on this board. I'm not Eugene Stoner - I just study what he developed. Every little detail matters. Read this please, when you have the time - it'll give you a deeper understanding of why this is all important:

It's the volume of the actual gas port. It's taken a very, very long to to learn this, and apply it. Once of these days, I'll give it up. I've given up pieces of it in the past. All those gas port ranges that I come up with, that work - vary by dwell time. You need to determine what works, based on dwell time, then compute the gas port volume. After that, you can compute what works for different calibers. It ain't easy, and it's taken alot of ammo money to realize that I could have been doing it easier, with less money. Just apply math. Nothing can beat the math. That's unpossible. This isn't Terminator T1000. It's just a mechanical device. It can't out-think us.

HOLY SHIIT! I can't believe you're still ALIVE, brother!!! I thought we killed you with the canned chicken!!! We haven't heard shiit from you since then! You have no idea that you're a Legend here, do you... That's not really a question, just a rhetorical statement. You are Legend, @AngelDeVille... Get to posting, already... We thought you were dead from the chicken...

Thet had it going on, back then. Freedom from YouTube. But, back then, they weren't ready, and only uploaded shiit from money accounts, and not from regular dudes like you and me, that just wanted to show you what my regular gun did at the range today. There was no room for the regular guy on Full30, that just wanted to upload his shiit - that he wouldn't have uploaded onto YT. That killed it, for what they advertised it as. It really was NOT al alternative to YT, for anyone. I get it, that's bandwidth, storage, servers, and download speed = and all the other shiit that goes with it. Full30 advertised as the alternative to YT, for gun guys - but weren't ready for that. The new naming doesn't help. Juxxi. Who's looking for that? Where's the advertising backing that name change up? Full30 was pretty well known, for awhile, and did great things - for paid advertisers, and their uploads. Bottom line in my gripe on all this - Full30 was advertised as the alternative to uploading anything gun-related, that you would upload onto YT. At the time, they were definitely not ready to handle that capacity, and couldn't do it. Normal people like me signed up right away, and I couldn't upload a video - fuk -that's why I came to you guys and signed up, in the very first place. Full30 burned alot of guys in the beginning, just from that. I was one of the first people to sign up, when it was announced, and I think I was the first guy here to pimp Full30, right here on this board. I know for a fact, after I pimped it, I was the very first person to challenge Robert, on his first post here. That's all written in stone, here.

Massive good trade, brother - worked for both of us, directly then, and it was perfect.

This is exactly why Aaron Lewis will always be my hero...

Here's the video that Matt referenced above. This is the Mrgunsngear channel.

Check it - Matt Carriker video here. He's Demolition Ranch. He's a Veterinarian, by trade, in Texas, has his own successful life. He's also 'UGE in the YouTube 'verse. Demolition Ranch, Off The Ranch, and all the other channels he has. Followed him for years. YouTube is losing their shiit. He describes it towards the end of this video. I'm looking for the other vid he's referencing in here, and I'll link that one, too. Watch:

Run it. Let's see what happens. Make sure it's lubed. REALLY lubed. Like this:

This is the only thing standing on your way of "what we've figured out as a Standard" to making these things run. The only thing. If your gun doesn't run - replace the spring with one of the known good springs we'e mentioned, and try again. He gets it...

18' rifle gas .308 Win barrels with 0.750" journals need 0.095" minimum to run, sometimes larger, up to 0.098" that I've seen. You're running the barrel that has the 0.875" journal, so you'll need 0.090" minimum, maybe a touch higher. I think you're there. Shoot the gun. As long as you have the recoil system straight, it should work right. If your recoil system isn't fixed, as stated here in the thread, then don't even shoot the gun - fix the recoil system first, as described above. After that - let us know how it does.

Typical male lions can weight anywhere from 330~550 lbs. I'd rather try to fight Brock Lesnar. Apparently, these 8% of Americans have never watched Gladiator, either. Fighting a Tiger is a bad idea. Fighting a (bigger, predator cat) Lion is a worse decision. There's some very specific reasons that I don't pick fights with Tacti-Cat. And he's only 14lbs...

The Human better bring their A-Game. And be Bad As Fuk. And it still won't matter. I don't see any claws at the end of the fingers on this Human hand. Bet they're ain't fangs in those Human jaws, either. I'm just sayin'... I'd pay good money to watch those 8% of Americans that really belive thier own shiit - pay money - go do it. Kick that lion's ass...

The lawsuits and challenges need to start piling up fast. As Fuk. Would be good if our lawmakers - the ones that actually ARE ON THE HOOK for this kind of legislation, kicked it into high gear, and smacked this agency down, a'la West Virginia Vs. EPA - but I doubt they'll do it. This is THEIR wheelhouse, and they need to defend it. Against an Administrative Agency, only.

I figured as much...

Determinations. Cylinder volume on the .260 Rem is 0.0012214. That's a 20" rifle gas barrel with a 0.750" journal and the 0.080" gas port. That's running a 2.500" 5.15oz buffer, lightest that I've tried to use that works. That's not the proper buffer weight, not 5.4oz, so that port diameter might need to be slightly larger to run a 5.4oz proper buffer. That gun was an experiment (the ONLY time, ever) that I've ever run a 2.500" buffer in a large frame, carbine recoil system. No other large frames I've built use that, run that - and it was a proof of concept, and it works. That was as heavy as I could get that little stubby 2.500" buffer in 2018. That barrel shipped with a 0.070" port, and had problems. I had to figure out why. That number on the .260 gas port came from the common 18" Rifle gas barrels in .308 Win, 0.750" journals. Those need 0.095" to run right, minimum, sometimes a little more. Backwards planning had me go to the 0.080" on that .260 Rem. It runs like a champ, is laser-accurate, and just works. No need to change it. My 2.500" buffer-use experiment is done. I'll never use another one, though, and haven't ever. On this 18" .308 Win rifle gas barrel, 0.750 journal, at 0.095" port, the cylinder volume is 0.0015644. On this 7mm-08 barrel, as shipped, 0.750 journal, 18" rifle gas, that comes to a cylinder volume of 0.0010569. Not gonna do it. Will have problems in operation. If I increase the gas port to a 0.090", cylinder volume goes to 0.0014822. That will work, and it's pretty close to 18" rifle gas 0.750 journal .308 Win numbers. This is all nugged out with a proper recoil system, with a buffer weight of 5.4oz. And a proper recoil spring for whatever extension you're using. If THAT PART isn't right, none of these numbers mean shiit. This is balancing the proper recoil system, and then balancing a gas system that matches it. This is what makes guns reliable. Weaponize math, brothers. That's what it's all about. Math. It's fuckin' Nerd Magic.