30 Rem. AR

Nearly all the upper is proprietory.


Love mine.

Because…Remington…that’s why.

^^^^^ Exactly!

450 Bushmaster, 30 Remington AR, 300 AAC Blackout, 223 Remington.
All four cartridge create by or with Remington's involvement.
450 Bushmaster is sort of the 30 RAR's parent case (284 Winchester is the 450 BM parent case) but there were changes to rim diameter and you cannot make 30 RAR from 450 Bushmaster.

Proprietary upper, and thus proprietary barrel extension and barrel nut.

Left: 30 Remington AR, Right: Standard AR upper.

Proprietary bolt to handle the relatively high pressure of 30 RAR (55 ksi) when spread across that larger diameter case head. The bolt lugs are bases on a DPMS LR-308 though one lug is trimmed short to facilitate feeding.

Left: 30 RAR, Right: standard 223/556/300


They both use the standard AR-15 bolt carrier.

It uses a funky magazine too. The rounds only feed from the left side.


30 RAR, 450 Bushmaster, 223/556. I have found I can modify some 450 Bushmaster magazine and successfully center feed 30 RAR in my gun.

Given all the proprietary parts I think most companies would have struggled to make it a successful product. That said, had Rem use the 30 RAR bolt initially with 450 Bushmaster (allowing 450 BM to operate at 55 ksi instead of 38.5 ksi) and then quickly after introducing 450 BM and 30 RAR introduced a few other calibers all based on the same bolt, case head, and magazine (a 338, 6.5mm, 6mm, maybe even 224) they might have made it work through shear variety but it would have always been a hunting gun/cartridge due to the poor magazine capacity.


Left: 10rd 30 RAR magazine, Middle: 7rd 450 BM (the same size as a straight 20rd 556 magazine), Right: 4rd 30 RAR.

rambling
mcb

The above poster nailed it far better then I ever could......but going to do it anyway.

One of the big draws to the AR platform is its modularity, change too much stuff and you loose that, and people will distance themselves from it. In just looking at the numbers it does a great many things that it takes several other flavors to do as well.....BUT so much is different.

That is why I think it did not stick.

I would love to have one. I've been thinking about getting another MDWS wildcat called 30 sabercat, but I really don't need any more deer rifles.

https://mdws.forumchitchat.com/post/30-sabercat-the-mad-catter-is-back-at-it-again-8258222

To many similar, but better cartridge's out there.

I can’t seem to get the funds right or the justification but there is a Remington R30 that apparently has had a 223 barrel made for it for sale locally. They want $500 and it’s been listed for 2 months.

I don’t think anyone but I have given any interest and my interest only lies in its ability to be a 30 Rem AR which the owner apparently has the necessary components to bring it back to that.

It has non-special interest value as a complete lower but the upper is worthless as anything but a very heavy fixed 223 caliber upper or an obsolete 30 Rem AR.

Ammo availability is undoubtedly why the 223 conversion was done and it is also the reason I hesitate to get it.

Remington1911 said:

The above poster nailed it far better then I ever could......but going to do it anyway.

One of the big draws to the AR platform is its modularity, change too much stuff and you loose that, and people will distance themselves from it. In just looking at the numbers it does a great many things that it takes several other flavors to do as well.....BUT so much is different.

That is why I think it did not stick.

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earlthegoat2 said:

I can’t seem to get the funds right or the justification but there is a Remington R30 that apparently has had a 223 barrel made for it for sale locally. They want $500 and it’s been listed for 2 months.

I don’t think anyone but I have given any interest and my interest only lies in its ability to be a 30 Rem AR which the owner apparently has the necessary components to bring it back to that.

It has non-special interest value as a complete lower but the upper is worthless as anything but a very heavy fixed 223 caliber upper or an obsolete 30 Rem AR.

Ammo availability is undoubtedly why the 223 conversion was done and it is also the reason I hesitate to get it.

Click to expand...

I would be happy to buy it if the 30 ar bolt and barrel come with it. I am patient enough to find some brass for it.

Do Y'all think it likely someone will come out with a similar cartridge in the near future given how popular alternative AR cartridges as well as the AR in general are? I would certainly be interested.
citizenconn

citizenconn said:

Do Y'all think it likely someone will come out with a similar cartridge in the near future given how popular alternative AR cartridges as well as the AR in general are? I would certainly be interested.
citizenconn

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Someone already has. 30 WSSM from Olympic arms or Dtech. There is also 30 sabercat from Mad Dog Weapons Systems.

someguy2800 said:

Someone already has. 30 WSSM from Olympic arms or Dtech. There is also 30 sabercat from Mad Dog Weapons Systems.

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I should clarify: one that is SAAMI approved with strong support by both ammo and barrel mfgs. I'm not dissing those you listed. But there are a plethora of good wildcat designs that get minimal exposure and support. I am looking for something at least as supported as the newer offerings like the 350 Legend, 6mm ARC, etc. Even with a cartridge as good as the 6GT, I'm not sure it will ever be relevant outside its niche. I was simply thinking a redo by a heavyweight gun mfg might make the .308 Classic (forgive me) a well, classic (or at least a success this time around.)

citizenconn said:

I should clarify: one that is SAAMI approved with strong support by both ammo and barrel mfgs. I'm not dissing those you listed. But there are a plethora of good wildcat designs that get minimal exposure and support. I am looking for something at least as supported as the newer offerings like the 350 Legend, 6mm ARC, etc. Even with a cartridge as good as the 6GT, I'm not sure it will ever be relevant outside its niche. I was simply thinking a redo by a heavyweight gun mfg might make the .308 Classic (forgive me) a well, classic (or at least a success this time around.)

Click to expand...

Don't hold your breath, I haven't heard of anything on the horizon.

If the goal is just to get more power out of an AR15 form factor, there are two other options that qualify. The defunct DPMS G2 and POF Armory Revolution. Both are basically shrunken down AR10 that externally are the same size as an AR15, but internally use larger bolts and mag wells to be chambered in 308 win, 260 rem, and 6.5C. The DPMS was even available in 338 federal, and if I ever find one it will be mine.

I personally solved this dilemma with a 358 yeti from MDWS.

Because it came out on the eve of one of the worst gun panics and of course Remington did a lousy job of supporting the cartridge.

someguy2800 said:

Don't hold your breath, I haven't heard of anything on the horizon.

If the goal is just to get more power out of an AR15 form factor, there are two other options that qualify. The defunct DPMS G2 and POF Armory Revolution. Both are basically shrunken down AR10 that externally are the same size as an AR15, but internally use larger bolts and mag wells to be chambered in 308 win, 260 rem, and 6.5C. The DPMS was even available in 338 federal, and if I ever find one it will be mine.

I personally solved this dilemma with a 358 yeti from MDWS.

Click to expand...

Thanks for the recommendations. I have assembled some fairly lightweight AR308s in the cartridges you recommended, sans the .338 Fed, because even though it intrigues me it seems to be in a fast nose dive support-wise. Same with .358 Fed.

I haven't pulled the trigger on some of the boutique varietals because I don't want anything with proprietary parts/designs. I guess I could try the 300 HAM'R since its now SAAMI certified. I like the boom from my 450 Bushmaster, 458 SOCOM and .50 Beowulf ARs. But I would like a little more powerful .308 just to be able to use my stockpile of .308 bullets.

someguy2800 said:

Don't hold your breath, I haven't heard of anything on the horizon.

If the goal is just to get more power out of an AR15 form factor, there are two other options that qualify. The defunct DPMS G2 and POF Armory Revolution. Both are basically shrunken down AR10 that externally are the same size as an AR15, but internally use larger bolts and mag wells to be chambered in 308 win, 260 rem, and 6.5C. The DPMS was even available in 338 federal, and if I ever find one it will be mine.

I personally solved this dilemma with a 358 yeti from MDWS.

Click to expand...

The G2 is so sad. It had been the first bit of innovation DPMS had done since the Freedom buyout. These scaled down AR10's will always face an uphill battle just due to the all of the money people have thrown at DPMS and Armalite-style AR-10s.

Assuming you want to stay with the aAr-15 platform, if you want 30 caliber on the platform then 300 AAC blackout is a good choice though a fair bit short of 30 RAR in ballistics but has the flexibility to do subsonic really well. If you don't care about subsonic and want the best performing 30 cal on an AR-15 platform the 300 Ham'r is a pretty good option. Closer to 30 RAR performance (but still short) but with very little proprietary parts other than barrel and magazine.

If you're not set on an AR-15 platform then there is a world of 30 caliber cartridges that will equal or better 30 RAR.

mcb said:

Assuming you want to stay with the aAr-15 platform, if you want 30 caliber on the platform then 300 AAC blackout is a good choice though a fair bit short of 30 RAR in ballistics but has the flexibility to do subsonic really well. If you don't care about subsonic and want the best performing 30 cal on an AR-15 platform the 300 Ham'r is a pretty good option. Closer to 30 RAR performance (but still short) but with very little proprietary parts other than barrel and magazine.

If you're not set on an AR-15 platform then there is a world of 30 caliber cartridges that will equal or better 30 RAR.

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Thanks for the recommendations. I have assembled quite a few .300 Blk ARs from 7.5" to 16", set up for sub and supersonic. Its a lot of fun suppressed and even though others do, I don't use it for hunting. I love plinking with it and have found it to be pretty easy to hit steel targets up to 400 yards. Past that I have better options.

I also have a number of 7.62x39 ARs from 10.5" to 16". Though they can be a little fussy feeding at times, I really enjoy those as well. My Dad handloads them for us (brass not steel), and I find them to be much more accurate than their reputation. I would, and have, hunted with these for hogs and deer, though the last couple of years I have carried a .350 Legend instead.

I guess I will have to give the .300 HAM'R a closer look-see. Thanks again.

Keyfer 55 said:

I sold my 300 blackout. I like a little more power.....

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I have three 300 BO, I like the quiet. For varmints like armadillos it does just fine for me.

Some cartridges through the years just didn’t catch. It’s typically because of advertising. If the manufacturers make a big deal, people jump on the bandwagon because people like shiny new things. And that’s cool. Good example is the 300 Whisper. It is the mirror image of the 300 AAC. But is was a dismal failure, while the Blackout is selling like hot cakes! Eh.. go fig.

I deer hunted with my 7.62x39 for a season and fell in love with a 16" AR15 as a hunting platform, but the cartridge left me wanting for more oomph, even with a 2600 fps handload. I followed that with an AR10 which I hated due to general size and handling, and then settled on my 358 yeti which has been great.

David Hoback said:

Some cartridges through the years just didn’t catch. It’s typically because of advertising. If the manufacturers make a big deal, people jump on the bandwagon because people like shiny new things. And that’s cool. Good example is the 300 Whisper. It is the mirror image of the 300 AAC. But is was a dismal failure, while the Blackout is selling like hot cakes! Eh.. go fig.

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That one is pretty easily explained because 300 whisper was a trademarked cartridge so you can't make a gun and print 300 whisper on the side without paying a royalty or licence. Blackout on the other hand is saami standardized and is not trademarked so its free for the world to use. Anyone who buys a 300 blackout reamer can make guns and barrels or ammo. Step number one in making a commercial success is it can't be a trademarked name.

Yes, that’s a good point.