98Z5V

I don't have any light or complicated buffers (all are 5.4oz or close, standard buffers), run Armalite EA1095 recoil springs, and all my carriers/BCGs are full weight and not complicated. Simple parts, that work. Make sure your gas system is squared away, and the guns will run any ammo. I don't have a single adjustable gas block. I have 7 of these things. I'm just telling you what has worked for me, all 7 times. I'm pretty sure it's a solid plan to use, and not blind luck.

If you just run a standard carrier, standard gas block, factory Armalite AR-10 recoil system (Carbine of Rifle, either one)... It's a simple gun, you're not adjusting gas, it eats anything...

If you want a reliable gun that's able to eat any ammo, just make it simple, and leave the complicated and fancy parts for another build. Don't complicate shiit with complicated shiit. What you're describing in your second paragraph sounds just like my 13.5" gun. Here's a report of it our to 400 yards, with just the red dot scope. I'm sure this little gun will do 600 yards easily, and I'll be testing that soon - after I swap a magnified optic on it. I originally wrote this up over on Full30.com: https://forum.full30.com/t/zeroing-a-308-rifle-with-iron-sights/11194/21

NICS was back up today, and crushed my local shop, and John. It just crashed yesterday - went down. John is out of ammo, and damn near out of guns. All the customers are unknowns - never seen 'em before, ever. I went in today after work, to help with his end of day, and it was chaos. Started by working the door, asking prelim questions about what they needed, just to tell them that "it's out of stock right now." Ended up behind the counter, looking through barrels for rifle builds, and telling them if we had it or didn't. This shiit is nuts, and there's no reason for it to be like this.

See now why I asked what I asked? This snippet of a statement from you COMPLETELY changed what advice you'll get, and from who. There are very few of us here that can even THINK about giving you advice on Canadian gun laws. Nobody in the United States can properly advise you on anything-Canadian-Gun-Law. We might sound like dicks here sometimes, but this whole thread proves whey we need to ask what we ask, and the rationale for asking it.

Yes, you can. For a 14.5" barrel, you can either run AR15 midlength gas system or Armalite AR-10 Carbine gas system on a 14.5" barrel - I have it on a 13.5" barrel, the fde gun I posted above. You have another inch of dwell time over what I have on mine. Will it work? Yes, if your gas port is the proper diameter, and you're running the proper recoil system. It'll work like a champ.

Addressing the two things quoted in red above. #1. They have to be referencing gas port position after the chamber - no other way they came up with that number. Gas tubes are not the lengths that they are quoting in that article. #2. I never stated that I had a AR15 Carbine gas system on my 13.5" gun, but the number that you put in there was for an AR15 carbine gas tube length - I specifically stated that I had an Armalite AR-10 Carbine gas system on that gun, and I said that it's a touch longer than AR15 midlength gas. Details... Look again at the gas tube lengths I quoted above. AR15 midlength gas tube is 11 3/4" long. Armalite AR-10 Carbine gas tube is 12 1/16" long... Armalite only does two gas systems for AR-10s. Carbine and Rifle gas. Armalite AR-10 gas tubes are 3/16" longer than comparable AR15 gas tubes, and they have different bends to them to account for height-over-bore. They're different from AR15 parts, totally. Details like this are why it sucks, for us here, when someone jumps on the board and tells us all about their AR-10 build, and we start asking questions, only to find out that it's really a DPMS LR-308-based build, and nothing to do with Armalite AR-10 pattern at all... The two are not identical, and there are differences... There are even bigger differences once you toss in the Bushmaster BAR-10/RRA LAR-10 design. Both those handguards, black gun and fde gun, are 12" versions.

Krieger actually DOES rifle their own barrels, and can do whatever they want for twist. Very, very few "barrel makers" actually rifle their own barrels - they buy rifled blanks, contour them, chamber them, etc... from rifled blanks. Krieger, Wilson Arms, Green Mountain, Bartlein, PacNor, Ballistic Advantage, Faxon - they actually really make barrels, from metal rounds, rifling included. Olympic Arms used to, but I don't know if they're still doing it these days. A whole bunch of other companies don't do that, buy rifled blanks, and do the rest of the work. Best bet - you see someone advertise a 1:11" twist - call them. It's gonna be a 1:11.25" barrel.

You'll see alot of barrels advertised as 1:11" twist, but they're not that. They're 1:11.25" twist. That's the number that Eugene Stoner came up with for twist rate for the M110 design, when he was working for Knight's Armament, desigining the M110. The Army mandated the projectile, 175gr Sierra MatchKing, and they mandated the effective point-target range of the weapons platform, as well as the barrel length of the design. Eugene Stoner determined that the 1:11.25" twist was perfect for that barrel profile, range and barrel length that the Army mandated. Advertisers and marketing people get that wrong, but it won't matter. If you see something listed as 1:11" twist, just know that it's 1:11.25" twist, and that's the reason. No manufacturer is rifling barrel blanks at 1:11". I shoot some 195gr handloads through a 1:10" twist AR. That's all I have for .308 Winchester guns, minus one Kimber bolt gun that's 1:12" twist. All the other .308s, be it bolt gun or AR, are 1:10" barrels. If 1:11.25" is absolutely perfect for 175s at distance - would they stabilize the 195s that I play with? I have no idea, because I don't have any of those barrels. Will either work? Hell yeah, they're both gonna get you to 1k yards, if you do your part, and you built a good gun. The heavier your projectile, the less the wind will mess with it. If you can get the initial muzzle velocity up where it needs to be, the heavier projectile will have a longer transonic range than a lighter projectile. This does not apply to subsonic loads and projectile weights.

I'll hit the rest of this stuff later - going over to the Gun Pusher's house now for a Coronavirus BBQ. I'll be primed for conversation when I return.

The gas port diameter on that particular barrel is 0.105" - and the max you can go on a gas port diameter is 0.125", because that's the internal diameter of a gas tube. Going larger than 0.125" on a port wouldn't gain anything, because of the ID of the gas tube. And that's with a 0.936" gas block diameter, at the gas port location, on that barrel @DNP posted. There's not alot of dwell time on a 16" rifle gas barrel. Almost nothing. That's why the gas port is huge.

Let's start first with - Where do you live? We'd know that if you posted an intro, in the Intro Section, and told us about yourself. Here's the section: https://forum.308ar.com/forum/22-introductions/ Here's why this is important - there are alot of states with seriously fucked up gun laws. We might advise you on something, and you do it - and later find out that you're "completely illegal" in your state, with what you've done, based on what WE advised you to do... Legal Liability here, for the board. I hope you understand that. You need to get to details,alot of them. Go make an intro, and spill your own beans about where you are, what you're trying to accomplish with this built, what you want it to do, etc. You can't give "too much" information" on this, at all. What you're giving here is "not enough information" to even give you an honest recommendation or opinion.

Okay... you working with stripped lower and upper now, or are you working with changing a complete rifle? I hope you can see the issues here, working with the information that you're supplying - and you're hoping that you get back some accurate information. It's a little difficult, providing information to you, when we don't really know what we're working with. It's difficult enough getting information out of people, but it's even worse on this end when you feel like you have to water-board someone just to get enough information to answer their questions - because those questions are so vague, and lacking information. Spill the real deal on what you're trying to do, - everything - and let's get to the important stuff. Until you do that, we can beat around the bush for months, and never really get anything done here.

That's what happened today, here in AZ, brother. First call went through - second call dropped. Gun Pusher John closed the shop at 5pm (never does that) after that happened. Gun Craze, might have crashed the system, and all the NICS people said "FUK THIS" and went home when they had to start answering telephone calls. Who knows. The only solid thing is - the online system went down.

Aaaaand... you can believe that if you want. That's not practical experience, at least none that I've experienced. But, you do what you want. You did state that you wanted to shoot 700~1,000 yards, am I correct on that? You shoot in any wind at all, and you'll find out fast, what I'm saying. My typical range out here is warming up on the 500, and confirming it on the 850. If you think I'm bulshiiting you, then you're on your own. You can apply as many "theoreticallys" as you want to the information I've already given you.

Proper twist to get out to those ranges - 700 yards to 1000 yards - is gonna be 1:10" twist. That will do better tahn a 1:11.25" twist barrel, because it will stabilize the heavies better. 168gr projectiles suck at 1000 yards, over the 175gr projectiles. If you're going to dabble in long range, a 1:10" twist will suit you far better than 1:11.25" twist. 1:10 does great with projectiles down to about 150gr, too.

Your first two posts were about building a gun with Aero M5 receivers, and a 20"' barrel - have you switched it up now? Why the Stag-10 questions?

ToolCraft for the BCG, or the Fulton Armory BCG. Fulton Armory will test headspace for you, if you buy their BCG at the same time as the barrel.

Common twist rate that you're looking for is 1:11.25" twist. You'll only find 1:11" or 1:11.5" from custom barrel makers, and it'll cost you to have them rifle it in one of those two. Now, why do you want that twist rate over 1:10" twist? Next, I'm not aware of any manufacturers make stainless barrels with nitrided treatment. Steel barrels get nitride. Stainless don't. So once again, that custom barrel makers stuff, and $$$,if that's what you really have to have. Here's a barrel for you, that meets most of your expectations, it's a match barrel, and shoots light out. https://www.fulton-armory.com/barrelfatitan185nmmedss1x10936gasblock.aspx

Something of mine always got broke, busted, all that - when a redhead was involved. Jack didn't have shiit to do with it. Fuk those redheads.

HAAAAAAAAAAAAAAAHAHAHAHAAAAAAA!!! He got the doughnut! I'm betting he made the deal!!!

1966~1977 Broncos are badass... The later years of that First Gen were bulletproof.

Most pistol braces that are made to work on pistol-specific receiver extension - those extensions are AR15 designs, and 7" in internal depth. In order to run that on a .308AR, you need a buffer that weighs 5.4oz or damn close as well as 2.500" long, and run the Sprinco Orange spring. KAK makes a good buffer that's 5.3oz, close enough, and doesn't break the bank. GearHead Works makes two different Tailhook braces which are very good, and SB Tactical makes good braces. Pay attention to what you're buying for a brace, see if it comes with the receiver extension. If you buy a brace without an extension, pay attention to what the inner diameter of the brace is, and make sure you buy a AR PISTOL receiver extension - they're larger in diameter than both standard sizes, mil (1.14" OD) and commercial(1.17" OD). PIecing it together will be easy, but you'll need to pay attention to the parts that you're ordering to make sure it's easy... It'll run fine with a rifle barrel and rifle gas. Gas systems and recoil systems are not dependent on each other. Carbine recoil works fine with rifle gas, etc. They must be balanced, and work together, though. The pieces I just listed for you will work fine.

You're not going to be able to run a rifle gas system on a 14.5" barrel. I think when you reference the 12" number, that was a number for common rifle length handguards, but it's not gas tube lengths. An Armalite AR-10 Rifle gas tube is 15.5" long. That's more gas tube than you have barrel length, which would be measured from breach-face to barrel end. The gas tube extends into the upper, yes, but even if it's close, that places your gas port right at the end of the barrel (if it's not beyond the end of the barrel). If you're dead set on 14.5" barrel, you'll have to have the muzzle device pinned and welded, or silver-soldered, or Tax-Stamp it as an SBR. If you don't Tax Stamp is as a legal SBR, and you don't permanently attached the muzzle device, then you've just created an illegal SBR. That's Felon Status, right there. Not worth it. Here's a pic of a 16" rifle-gas .308AR - look closely at how close that gas block (and the gas port) is to the end of that barrel. There's not another 1.5" of barrel to lose on a rifle gas setup. Here's a 13.5" barrel, AR-10 Carbine gas system (a touch longer than AR15 midlength gas systems), and a permanently attached muzzle device, bring total barrel length to 16.1". Here's gas tube length information:

Well, NICS went down about 3:30pm AZ time today. John managed to call in for a transfer, and spoke to a human, and got the transfer through the old way. He tried another one 15 minutes later, the phone rang, and immediately disconnected. NICS is down. Don't know if that means it was shut down, or it went down. If it was shut down, the only people in AZ that'll be able to do transfers are Concealed Carry Licensees (no background check required here if you present the Concealed Carry). Shiity way for the .gov to shut down gun sales, if that's what happened. Hell, maybe the system just crashed from overload - people are going nuts buying guns and ammo right now. That means they weren't prepared for any of this, and either didn't have guns, or didn't have enough guns... There's no such thing as "I have enough ammo," so I get that part of it. I just hope the ammo hoarding doesn't start again. That took forever to get over, last time. So anyway - NICS went down today.