98Z5V

You ever been around a platoon of Rangers? You yell out at morning PT formation, when they're only dressed in t-shirts, Ranger Panties and running shoes, "Hey you motherfuckers! There's an anvil in the middle of the hand-to-hand pit over there - first one of you dickheads that breaks it gets a 4-day pass..." That anvil is done... It's gonna be SAVAGE.

Bare hands.

Next few days will get it resolved, major progress tonight, that's for sure. I think I'm the one that either exposed, or threw the monkey wrench into - the glitch in the Matrix. Probably the latter. I could break an anvil in a sand pit.

There's something happening in the last few days, and I think I was the first issue with it. @Robocop1051, more info, brother, right here...

Here are the pieces and specifics that we need to know, on the gas system and recoil system, in order to see if they're working "correctly." In this, with numbers, anything can be figured out. Gas system info that's needed: Barrel length and gas system length (i.e., 18" barrel, midlength gas). gas port diameter, gas block journal size (this ultimately affects the proper gas port diameter), what is the gas tube protrusion into the upper receiver? Pics help on this, because a proper-lengthed gas tube will end directly in the very center of the cam pin cutout in the upper receiver. Recoil system info that's needed: Internal depth of the receiver extension, measured from the top of the extension, until the tape bottoms out in the bottom of it. Buffer length and weight (we have 5.3oz on the weight already - need length). We know the recoil spring - DPMS LR-308 spring - but is it an actual DPMS part, real DPMS part? Rifle or carbine spring? What's the brand on that thing, if it's not a real DPMS part shipped from DPMS? If you can, post the relaxed length of the spring, wire diameter, and coil count. If you can give me that information, I can tell you if your recoil system and gas system will work with each other, or fight each other. This thing was definitely trying to unlock early, as evidenced by the bolt lug issues you pictured above, earlier in the thread. The heaviest wear was from bolt thrust, solely. If it were mine, I would sort the gas system and recoil system, make sure I was straight on them, and replace that bolt (not the BCG, just the bolt), because with the wear on those lugs, you will shear a lug sometime in the future. Maybe more than one. Bolt lugs should never look like that, and that's the sign, right there, to get that thing out of the gun. First though, is figuring out why it went like that. If you changed any parts in the gas system, or recoil system, over time - knowing that info will help, too. When you changed what, what you changed it from and to, why, etc... Details on previous parts will help, if parts were changed. I'm positive that you have a PSA buffer hanging around somewhere, because they've never shipped a gun out of that factory with a 5.3oz buffer... I know alot of this was probably already discussed in this thread, but having it all in one post is gonna streamline this process, and get to the bottom if it much quicker...

Yep, working through it. I guess I was the guinea pig. Or Karma is catching up with me.

I think this was the first person here to move to a BSF carbon fiber barrel: Hit that thread up, quote a post of his,and he'll be back on. I'm curious to see how it's turned out anyhow. @Robocop1051 is correct - the carbon fiber barrels aren't really "light," but they're lighter than the exact-same-profile steel or stainless steel barrel. I know his Proof barrel is pretty damn tough, too. "Smash up some cinderblocks with it" kinda tough. Literally.

^^^ That's the answer on just about any scoped AR, small frame or large frame. Extended charging handles make an immense difference on a scope AR. They should all be that way, IMHO. .308ARs are gonna be harder to charge - that's just their nature. Heavier spring than AR15 parts.

I pretty much made up the same thing, bufferwise for my .260 Rem. I had the DSG bodied buffer weighed at 5.15oz, and another hybrid combo at 5.7oz (for 2.500" buffers). In the .260, sometimes the 5.7 wouldn't lock back - maybe a touch too heavy, I was thinking? I swapped in the DSG hybrid at the 5.15, and I've never had another problem. In my case, I know what it is, with that 5.7 buffer - that Wilson Combat .260 barrel had a 0.070" gas port, and I know in my heart that thing needs to be 0.080." That's the difference with those buffers. That gun comes apart for paint soon, so....

@Rsquared, I need to make a phone call to you, but here's the short version - would you want to ship the MRAD out here, FFL to FFL two weeks early - send it to GunPusher John? He (We) could then take it out the couple weeks before the shoot commences, and I can truly make a custom load for it, and those 285s... Just something to ponder...

Ahem! Uh, guys... Well, I need to tell y'all something. Ah, nevermind... Oh yeah? You think? I THINK you've forgotten what you've sent, and I might need to update the pic again... It better be... @Robocop1051 needs to answer that one. I want some time on the 500 Blackout, videos everywhere, all that... Got my work address, brother? Send powder there - shiit send it all there. We won't have issues with it that way, those stupid "hazmat says it has to be shipped..." bastards...

I've got a Nordic Comp 18" barrel in my original Mk12 Mod 0, it's the only one I own, and I completely agree with you - that thing shoots super tight groups, perfect fit and finish. Definitely an impressive barrel. Too bad they don't make that profile anymore, or I'd definitely recommend it for 5.56. They do very good barrels.

That is still a completely viable option, brother - that will work.

3rd evening in a row, including tonight. I've been trying to respond to this thread: Here's where it takes me when I hit "submit reply: https://308ar.com/

Test

Hmmm... Can't reply in a specific thread, been trying. Every time I try to reply in it, and hit "submit reply," it redirects me to 308AR.com, the info site.

Test

This is how you do it.

You get that cheap Crock Pot yet, bro? Walmart has them, easy peasy.

WTF?!!?

You catch the part about the fishing?...

WEG, Most of this is going to come down to the gas system, and the recoil system. Those two systems are what primarily control the entire (balanced) timing of the gun's operation.

"Crock-Pot" brand. Just this little cheap guy right here, to get you started. You don't need anything fancy, and you don't even need that little "dip warmer" that this one comes with. https://www.samsclub.com/p/8qt-slow-cooker-with-little-dipper/prod20202004?pid=ps_2030345492&wl0=b&wl1=g&wl2=c&wl3=355134916051&wl4=dsa-36007448126&wl5=9030019&wl6=&wl7=&wl15=70737718966&wl16=&wl17=1t3&veh=sem&kclid=b089b3c3-6676-43b6-b06c-d6e367e51df9&gclid=EAIaIQobChMIi-nW6vDp4wIVCv5kCh2GAglnEAAYAyAAEgIhSfD_BwE