98Z5V

The Sprinco Orange spring was specifically designed for .308ARs running the 7.000" internal (AR15) carbine extensions, and 2.500" buffers. Get the Sprinco Orange spring.

@wwlefty, that's good stuff, man - good work. I'm going to copy some of that and implement it in mine.

Sims. Simunitions. They fucking hurt when you get stitched up with them. Had a friend lose an eye from one. Had another dumbass not "surrender" like he was supposed to, and he moved forward - he took one along the top of his scalp that parted his hair - for good. Lots of staples, lots of blood (heads just bleed), and a big fuckin' scar.

Yep, I'd cut that port up. Go north, brother. 0.875" gasblock journal changes the numbers I gave you before - add another 0.005" to what I gave you earlier (instead of 0.080"~0.085", you're gonna need 0.085"~0.090" on that port.) Journal size matters.

That depth os good for 2.500" buffers - but I'll bet that buffer weight is 3.8oz, which isn't enough. Cutting 10 coils off the spring isn't the way to do it - you just weakened that entire recoil system, greatly. I'll be that there no bolt catch out there that would grab that speeding BCG, now...

They're easy to control, brother. They're a hoot.

Gotta catch it quick in this one - shotgun. No mag to strip, last round, though, gun goes over at a 45 to check that chamber. It's not long, but it's fast, and that's years of doing it that makes it like that. I'm not bragging - I'm stating training, nothing more. Habits. Over time. I'll get some AR vids of this up here, when I find them, from here. Train real, but train smart. Don't train for games. Train like your life depends on it, because you don't know when that will be, and you can't predict it. Don't throw away mags, hang onto them. You don't know when you'll be able to get another one, and ammo resupplies are worthless without them. https://forum.308ar.com/uploads/monthly_2018_10/VID_20181018_162901631.mp4.96aaa9e99466aeddeb8b762a60c10456.mp4

There's another thread, that this OP created, on this topic. It's been covered.

I pull the mag every time the AR stops shooting. First thing I do is look at the top of it. If there's brass in the top of that mag, and not the mag follower - I have a malfunction. Time to clear the gun. No time to fuk around when the gun stops shooting, so you need to get to business - strip the mag, LOOK. You can't do that if you throw it on the ground - then jam another mag into a jammed or malfunctioned gun. Zero sense in that - you just compounded your problems. Right finger on mag release, cut mag loose, left hand on mag - gun goes on safe at the same time. I either have brass, and a malfunction, or I don't. It's pretty easy to tell if you just fired to empty-mag... That "SPROING!" that people hate about the buffer spring, just told you that you locked back on the last round in your mag, and you need to change mags because you were empty. The recoil impulse is different, too - and if you shoot enough, you know what that last round feels like - AND you get the sound... Silencing that buffer spring is one of the dumbest things that you can ever do, and it's a gimmick. Unless you're a Gamer. There are too many videos here on this site of me doing just that - every single time the AR goes dry. Mag is out immediately, and that gun is tilted 45 degrees left - those two things happen at the same time - first thing I look at is the top of the mag, next thing I look at is the chamber - all in front of my face, in my work space. I dont look down to do it, I don't look left or right - straight ahead, direction of fire. Too many videos here of that. Same thing with my pump-shotgun use. Shot shooting, jack pump back, gun goes over to 45 degrees left, observe chamber. They're all here. Different games, different training - different outlook. I never just dump a mag when the gun stops firing unexpectedly. I pull that mag and look at it. That's my first clue. It's either brass or not. After that, I continue on with my training.

That's it, right there...

Not with a 6 15/16" extension and a 2.500" buffer - wouldn't do that. The room is there to lock a .308 AR back with those dimensions - unless that spring hit coil-bind before that. Wire diameter and length of spring doesn't look like something that would coil-bind, and prevent that from locking back. This is a BCG speed issue - due to a bad selection of parts from the manufacturer. My favorite Bad Manufacturer. These guys are my " @Robocop1051 Hates CMMG," for him. These guys just can't get it right, and don't listen to the obvious. They can't make reliable guns, but claim that they are making guns for everyone, spreading freedom... at the cheapest price point. They need to spend money (on H3 buffers and appropriate receiver extensions) and get their gas ports in line with functional guns, in order to send out "functional guns - for most of the people, most of the time, with most of the ammo." Instead, they cheap out. Making a "Functional Gun" is gonna cost enough money to spend on tungsten, and make an appropriate buffer, in the first place. If they stick to that AR15 receiver extension, it's gona cost even MORE money, on making that buffer body out of stainless steel, instead of aluminum. That's "two counts" of "you need to spend more money..." to make a functional gun. This is the cheapest .308AR out there - with a "Lifetime Guarantee" - and it doesn't work. Because... I've stated it all before. They're not gonna spend any money on two tungsten weights for a buffer, and stainless steel for the buffer body, in order to bring that buffer weight up to 5.3 or 5.4 oz - so they can THEN have a proper gas port diameter - to make a functional gun. Cheaper is better. That's their goal. That's why most people that don't know what they're doing here, think that they need an adjustable gas block to "tame down" an over-gassed gun - that has a gas port diameter that 0.010"~0.015" undersized... So, with a too-small gas port... How the fuk is that thing "over-gassed?..." The whole gun isn't right... It's the cheapest gun you can get, and you can easily see where they cut the corners. Lifetime Guarantee, though. Good Luck with that.

Guys, this is all happening because of the weak recoil system, and the "down-sized" gas port diameter, that let's the weak recoil system "run for most people with most ammo..." That bolt is running too fast for the catch to catch it - because the recoil system is too light/weak. The remedy at that factory is to cut the gasport down from where it should be, to 0.010"~0.015" undersized. That's why most people think these guns are "over-gassed" an just add an adjustable gas block. Putting the Band-Aid on the wrong cut... It's a PSA 18" midlength gas barrel, so it's going to have a gas port diameter of 0.070" - and the OP is gonna find that out when he takes that gas block off to drill it up. It needs to be 0.080"~0.085" for an 18" .308 Win barrel with a midlength gas system and a 0.750 gas block journal size.

That's weird - the numbers. Not saying they're off, they are probably on the money. The weird parts is my .260 Rem load - it's 8.5 mils at 1,000 and 10.0 mils at 1,100.

Truth. It's AR15. AR15s have 13 pic slots in the upper, large-frames have 18 pic slots in the upper. You can't change the Picatinny dimensions, they're fixed. That's an AR15 upper. Probably from X-Products. I'd check mine, but I painted it.

Don't go nuts yet, brother. Look into the B5 Precision Stock. I'll have a coupld of these, once I can find them. LaRue had them on all the Siete rifles - that were rifles.

Down the Rabbit Hole he goes...

^^^ Those Super Light Geeks were there, like this dude in the vid above, at the presentation. They were asking some pretty wild questions (that got answered) when the Odin Turbo was briefed. That went full-on light-geek nuts with the questions.

6 15/16" internal depth is the true Armalite M15 spec for an AR15 Carbine Receiver Extension. Most of the aftermarket and other companies just do 7.000" internal, and it works well. Not to the Armalite spec, but it works. That extension is good.

Receiver extension looks alright - get it in another turn, file a notch or make a cutout in the bottom, to clear the tip of the buffer retainer. Before you file or cut, remove the buffer retainer completely, thread that extension in one more turn, and verify that you can still close your upper receiver down on the lower, and pin it there. Do that before any cutting/filing. That buffer and spring are junk. Sprinco Orange spring, for the 7.000" internal setups (AR15 carbine receiver extensions). KAK makes a 2.500" long buffer that weighs in at 5.3oz, and that's close enough to 5.4oz to call it good. Those two parts...

Odin Turbo, brother. 56:00 into the release vid.

Looks like a DPMS-based cut at the back of that receiver, so you're not going to be building any AR-10's with it.

External length of the extension doesn't matter - internal depth does. Can't help you until you post up the internal depth of the extension.

So, those original issues that he had probably didn't have anything to do with ammo quality - but his original bolt and firing pin. Well, maybe the ammo, and maybe that specific bolt (more than the firing pin, but the bolt hole, at the diameter of the firing pin hole). I've never had this issue with .260 Rem, running a .308-spec BCG and bolt - ToolCraft complete BCG is what I have, not that "special" Creedmoor bolt that they have, with dual ejectors. In light of that, is this 6.5 Creedmoor stuff putting out THAT much more power than .260 Rem? The numbers on both those cartridges don't state something like that - .260 is a little more powerful than 6.5CM, based on case volume, possible max powder charge weights, etc. So, why is 6.5CM doing that to his brass, and primers? Bad bolt face, and firing pin hole in the bolt? I wanna dig into this one...

They'll think he's in cardiac arrest, and the medics will show up!...

I think there's a .308AR.com Fall Shoot Machete Contest Giveway coming up...