Pantheon Arms Mini Buffer | NRA 17

Pantheon Arms are the ones who make the infamous Dolos take down system for the AR-15. At the NRA Annual Meeting he has a new mini buffer system and tube for compact ARs.

The mini buffer will retail for only $55 and has a proprietary buffer system. The buffer tube is only 3.5″ in length and the buffer spring is only 1/2 and inch longer at rest with zero tension. Unfortunately they would not allow me to take a photo of the buffer system but it can do my best to explain it.

The buffer is almost inverted and smaller. So rather than the buffer inserting into a regular spring, the buffer protrudes into the back of a milspec BCG. There is a free floating spring guide rod that can tilt to accommodate carrier tilt. The magic is in a special double helical spring that rests between the buffer and BCG.

It looks somewhat like this.


Pantheon has two versions at the moment of the mini buffer tube. The first one is in the photo at the top of the page. The buffer tube has an integrated castle nut shape while the other one is a smooth buffer with a coin slot on the back face.

Here is a profile view of the smooth mini buffer tube on a Viking Armament lower. Notice the angled mag well? It aids in inserting the magazine faster.


As I mentioned earlier, Pantheon Arms makes the Dolos kit.

Below is the owner’s personal set up in .458 Socom and .375 Socom. I really like the subtle cerakote paint job on the handguards. At first it looks like random camouflage but upon closer inspection you can see the numbers 458 and 375 on their respective barrel assembly hanguards. Even the matching lower has the word “SOCOM” painted on the side.

Pantheon now has MLOK and Keymod handguards for the Dolos system.

Nicholas C

Co-Founder of KRISSTALK forums, an owner’s support group and all things KRISS Vector related. Nick found his passion through competitive shooting while living in NY. He participates in USPSA and 3Gun. He loves all things that shoots and flashlights. Really really bright flashlights.

Any questions please email him at


  • PK

    $55 MSRP? If that’s correct, these are going to sell very well. I’m eager to test one already!

    • Jared Vynn

      My interest is definitely piqued. You could build quite the compact pistol, but aiming may be interesting.

      • iksnilol

        Put a red dot on it and aim it like you would any big hunting pistol.

    • Nicholas C

      Yes $55

  • RSG

    For those who have spent any time at all shooting a pistol with a buffer tube only, know it’s a pain in the a@@. This will only make it more ridiculous. That said, this would pair nicely with a PDW stock that usually calls for modified bolts or buffer systems. I’d guess a pdw stock is up next for them (it would be terribly foolish not to). Especially if they can produce the whole system for around $150. They’d certainly have the attention of that market, as those pdw setups start at around $250 and go up to $500.

    • Vitor Roma

      Install an adjustable brace. Shouldering a bracing ain’t a sin anymore.

      • RSG

        I have the original Sig brace on my gonto home defense 300blk pistol. I’ve had it since they first came out. Sig has now put out a PDW in brace form. It is adjustable and will probably be very, very popular. I bought a lifetime supply of lowers in the run up to the election. More than I’ll ever build. But the next one will be that Sig brace pdw. Slick as hell. Tim @ MAC even showcased it a few weeks ago.

  • Porty1119

    It’s adorable! That setup could be perfect with PDW stocks.