98Z5V

There was lot's of study over the years, but the in-depth crash course, with one-on-one instruction and practice, was a couple years ago at the Fall Shoot. That was invaluable training, right there, and really upped my proficiency level. He was schmammered, as was I, so it made it much easier to pick up on all the little nuances...

Read this before you spend any more money.

Nothing I said is sad. Not to me, not in the least. I stand by what I stated. Fully.

"Long Story" he says.

I'm in...

That bitch was laser-engraved with the PSA logo and PA-10 right on the bottom of it, brother, and that thing was 8.000" internal depth. We swapped one of my 3.250" H3 buffer in there, and STILL had to stack some quarters in the tube, to keep your BCG from slamming the ears on the lower... Maybe RRA was the ones making those for PSA, and engraving them for PSA - and it ended up on your RRA instead. And you had a short buffer...

Thank you, Mi Amigo. ❤️ @Retired Mike - we know what you need for a buffer, but lets address that spring as a next step, if necessary. Get the new (correctly weighted H3, 5.4oz) buffer in there first, and run the gun. If we have a spring issue, the quick, cheap fix is to just use an Armalite EA1095 spring. That's their AR-10 recoil spring. They run that same spring in their AR-10 Carbine Recoil System, AND in the AR-10 Rifle Recoil System - and it just works. Every time. You'll have an extension is 8.000" internal with a buffer of 3.250" moving inside it. That's 4.750" of movement inside the extension, that the spring must control. AR-10 Carbine is 7 5/8" internal (7.625") with a 3.250" buffer = 4.375" of movement/spring control. AR-10 Rifle is 9 11/16" internal (9.688") with a 5.200 AR-10 Rifle Buffer length = 4.488" of movement/spring control. That's how the same spring works in both recoil systems. Coil bind (compressed length) on the EA1095 spring is 2.448". I'll bet it would work fine, but maybe there's a very specific reason that Slash offers his very own spring for the RRA LAR-8s. If you get the H3 buffer, and it doesn't solve everything, and you need to make a spring change, and you use that EA1095 spring on my recommendation - and it doesn't work... Then you'll need Slash's spring, and we'll all know that in the future. If that is what all happens, I'll buy that EA1095 spring for what you have to pay for it, with shipping that you had to pay, plus shipping to me for it. I can always use a spare, and Slash is WAY SMARTER on Recoil Systems than I am...

This makes perfect sense, mathematically. Normally, in the RRA LAR-8, you'd have to run a 2.250" buffer to run the standard 7.000" internal-depth AR15 Carbine Receiver extension. As mentioned earlier, the RRA LAR-8 BCG is 1/4" longer than DPMS LR-308 and Armalite AR-10 BCGs (same OAL for those two brands). SO, that longer BCG needs a shorter buffer, to be able to fit into the same space (length of extension). Got it... Now, by MOVING to an 8.000" internal depth carbine receiver extension - they can use a buffer that's exactly 1.000" longer, follow? What's that new buffer length... 3.250"... Standard AR15 carbine buffer length, which is... Armalite AR-10 Carbine Buffer length. Makes perfect sense to me for them to switch to that. Makes perfect sense to me, also, as to why Slash has his warning/advisement in his buffer listing. @Retired Mike - that buffer you're running is just a 3.250" long standard AR15 carbine buffer - you listed 2.9oz, the AR15 exact part should weigh in at 3.0oz, for standard carbine. What I'm saying is - that not even an H1 buffer (3.8oz), it's not even an H2 buffer (4.6oz), and it's definitely not the H3 buffer (5.4oz). Quick fix it this - just toss any old AR15 H3 Carbine Buffer. Or use the Armalite AR-10 Carbine buffer, because those are all H3-weighted... Solved, brothers. And we know why. Subnote - now, I know why @sketch ended up a few years ago with a PA-10 Carbine extension that was 8.000" internal depth - someone at PSA copied what RRA was doing, and made those extension that way - but they didn't know why, what it would impact, or what the differences were between the major platforms... Hmmm...

Damn, my old Stompin' Grounds! Have him come up here to my location some weekend, Rob, and we'll go expend valuable materials...

I had to physically fit one in an Aero M5 upper receiver, just to test the function of the complete PSA upper that I was looking at - I had to do this, because the PSA upper would not close and pin to the Aero M5 lower I was using for the test of that complete PSA upper. It fit in the M5 fine, the PSA BCG ran fine in there. I ran it with no handguard at all, because I was looking at gas port sizing problems, and resizing as I went, until it ran correctly.

You "can't forget how to ride" like Jay-Rod did... No wrecking @DNP 's wife's bike 3 times on the same ride...

Man, it's a fun crowd this weekend, I'll tell ya!...

Bet you can't post pics of that stuff on Twitter and FaceBook - without getting a warning or suspension... Those two companies need to swirl at the bottom of the toilet, and just get flushed. Anti-Fucking-American, with their censorship. They're the 1st Amendment's worst enemy...

You just turned into Rene's Official Interpreter. Don't worry, it's not a bad title to hold. I'm @sketch's Official Interpreter - but I lose control alot of times...

Well, GAWD DAYUM!!! Imagine THAT Shiit, right there!!! Maybe I'm not as dumb as I look, you rotten bastards. I fuckin' TOLD YA'S, too...

That buffer weight doesn't surprise me. That's damn near half of what your buffer weight should be, to run a .308AR. You need to email Clint @ HeavyBuffers.com... Those two tubes are exactly what you think - they fit CR123 batteries. Email him: clint@heavybuffers.com Make sure you tell him that .308AR.com sent you...

Indeed... Already planning the next one, after parts come in to fix this engine. Taking BOTH next time - 2-stroke and the 4-stroke. One goes down, fuk it - rip the other one. No headlights on the 2-stroke, though, so I need the 4-t to ride at night. You ain't kiddin'... Plus, there are WAY BIGGER hills out there. I'll let you know on the plans for the next one, brother - I'm trying to get these local guys to make a trip down south - they've NEVER ridden the south dunes. Only Glamis, up north. I'll keep you advised. It'll definitely be an off-weekend, no holidays. Pull into Ogilby Campground all the way under the trees, right up against the little dunes...

Built one. Now the information is stuck... BUT I FUCKED IT UP!!! I guess there's too MANY numbers stuck in this noggin!!! The original sets were DPMS LOW PROFILE, 0.160" tang on the upper... The Newer DPMS Sets that Chris makes are still DPMS LOW PROFILE... Sorry - numbers confuse me sometimes...

High LOW profile on all the original upper receivers, and on the full change-over to the DPMS pattern.

By this logic, then CA is California. @Cunuckgaucho just lost his country...

^^^ That one is gonna trip them up...

If it's the RRA Operator CAR Stock, it's running the 7.000" internal-depth receiver extension, and I can see that in the pic you provided. RRA BCGs are a 1/4" longer than DPMS or Armalite based BCGS, so the buffer is another 1/4" shorter. Normally, to run a regular .308AR with a 7.000" internal-depth extension, you must use a 2.500" buffer. The RRA guns have to use a 2.250" buffer. I'm betting that things weighs 3.8oz, or a little less. You need toget that buffer weight up to around 5.4oz, and the only place that I know of that makes one is Slash - Heavybuffers.com. This link is the buffer, and the price includes the correct recoil spring that you need: http://heavybuffers.com/rra308car.html Specific notes from Slash on these buffers, and call him/email him if you have any questions on what you have/what you need: Please note: If your gun uses FN-FAL magazines this is the correct buffer. If your gun uses ArmaLite mags, DPMS mags or Magpul P-Mags please click here: CAR-10 .308 Carbine Buffer Contact me via email prior to ordering if you have any doubts as to which product you need. A RRA-10 buffer will allow you to use any AR15 collapsing stock (Magpul/LMT/VLTOR/Ace/etc) on your Rock River Arms .308 AR. Standard carbine length stocks cannot be used on these rifles with regular carbine buffers. This is strictly a 'Drop-In' part, no gunsmithing or modifications are required. This product is specifically recommended by Magpul for use with their carbine stocks on RRA.308s. (Call them!) RRA-10 buffers also work great with any other stock using a standard 7" carbine buffer tube. RRA-10 buffers are shorter and heavier than standard carbine buffers (and other .308 carbine buffer). Constructed of 303 Stainless Steel with a sliding Tungsten anti-bounce counterweight. Heavy buffers reduce felt recoil for the shooter, and minimize wear and tear on the gun. Some users have reported that the RRA-10 buffer significantly increased the reliability of their firearms. Note: Not compatible with .223 ARs. This buffer is designed specifically for use in RRA .308 ARs with 7" receiver extensions (buffer tubes). If you have an RRA extended length buffer tube (8") please see the XH Carbine buffer & .308 Rifle Buffer Spring (EA1095).

Exactly. I can post up the paper I wrote on it years ago, if you'd like. It's definitely not a "new math was of figuring it out" either - it's one of the oldest, proven ways around.

That's a badass series, brother!!!

@Retired Mike, were all three of those vids while shooting suppressed? That BCG is FLYING. You gotta cut that gas down, or get one heavy buffer in there. If you get the chance, get a couple vids of it firing without the suppressor... What's the weight of the buffer that's in there right now?