Taccom’s Ultra Lightweight 16″ 9mm Carbine Barrel

So Taccom posted up a picture of their Ultra Light Weight 9mm carbine barrel. If you haven’t been paying attention to competitive shooting, Pistol Caliber Carbine (PCC) is the new hotness in USPSA. Interest in PCC has skyrocketed. Everyone is making PCCs and parts of PCCs.

Taccom’s new ULW barrel is a short 7″ pistol barrel with a steel shroud welded onto the front end. Combined with their ULW handguard, which is a carbon fiber tube, it will be less than 1.5lbs in front of the magazine.

With a tube handguard could this possibly affect the noise the gun makes? While this is simply a barrel shroud and there are no baffles, when combined with a tube handguard would that make the setup a giant chamber? Granted gas and noise can escape out the front of the handguard, but given that the ATF shut down SIG Sauer and their MPX “muzzle device” because it was a suppressor monocore baffle, I wonder if this will be shut down as well?

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 nicholas.c@staff.thefirearmblog.com


  • PK

    Legality aside, that tube won’t last particularly long due to muzzle blast from the ports closest to the “true” muzzle of the barrel. CF is not an ideal material for this idea.

    • Nicholas C

      I suppose it depends on how they make that shroud. They could space the holes further apart or smaller so that the shroud contains more muzzle blast.

      If you look at the second photo (not including the top photo) you can see the weld on the shroud. There is a lot of material between that weld and the first hole of the shroud. So perhaps they did consider your concern and blocked off the true muzzle so that the heat and pressure is contained a bit longer and dissipates down the shroud before exiting out the side holes.

      • PK

        The bearing surface is sure to be greater than you might expect, to ensure concentricity of the extension even when pressure is applied perpendicular to the bore at the muzzle. I doubt there’s simply empty space from there to the muzzle of the true barrel, and if there were I still wouldn’t trust it too far for durability.

        CF tube just doesn’t take to expansion pressure very well, it’s made for particular forces and little else. As a simple handguard, it works well. As a tube containing any real pressure, even over ms timescales, it tends to have substantial wear issues.

    • Christian Hedegaard-Schou

      Yeah but how much pressure does 9mm really have after 7″ of barrel travel?

      • PK

        Call it 2500-2800PSI for a NATO spec 115gr load depending on the exact powder used. That’s quite substantial for an expansion force on CF tube.

        • raz-0

          Yeah but that would be the pressure in something the size of the barrel’s bore. There’s substantially more volume int he perforated bloop tube welded on teh end, and there’s a LOT more volume in the handguards ID.

          Way back when we lett PCCs into our local static steel match, and a lot of them were people putting a top end on their 38 supercomp guns, so we had a bunch of them bring their gear in and chrono it. We were concerned that they MVs would be high enough to destroy our pile of steel rapidly. It turned out they were all pushing very close to the same MVs as their normal open guns were shooting the same loads.

          There’s a lot going o there that might mitigate pressure issues, I’d be more concerned about heating the epoxy base of the CF.

          • PK

            CF tube is far from ideal for a number of reasons, but based on the wall thickness, hole size, spacing, and material choice of the barrel extension, CF tube could still safely be used if the barrel extension were aluminum instead.

            That would also mitigate any legal concerns as far as the extension being a silencer goes.

        • Christian Hedegaard-Schou

          Divide that by the 4 ports in the shroud, plus the shroud is probably larger than 9mm in internal diameter so you’ve got some loss out the front, then the gases have time to diffuse a half inch or so before they start impacting the inside of the carbon fiber tube.

          So…. A couple hundred psi at most?

          I seriously doubt that’s going to be a problem. I’m also willing to bet they’ve stress tested their handguards. The tube itself looks to have some pretty stout walls.

          • LGonDISQUS

            What about the ability to withstand temperature with the epoxy resins holding the CF together?

  • I am very interested in a lighter weight 9mm carbine barrel. But I am not sure this is the way I would want to go.

    I think I would like a really thin barrel with a carbon fiber sleeve for rigidity.

  • Christian Hedegaard-Schou

    It’s a cool idea, but it’s limited to a very small subset of existing tube-style handguards. You can’t use this barrel with any type of handguard which has any hole in it, exposing gases directly to your hands.

    Cleaning isn’t going to be fun either.

    I do like the concept though.

  • Pcc junkie

    Lawsuit waiting to happen

    • Shankbone

      Yeah, they should make foam footballs and rubber baby buggy bumpers instead.

  • Tinkerer

    I admit my ignorance. Is there a USPSA PCC match rule that imposes a minimal barrel lenght, which would prompt for a race barrel with such length but lightened for faster target acquisition? Because I really can’t see the reason.

    • There are no minimum barrel length rules in the USPSA PCC Rules Addendum. But there is still federal law with the 16″ minimum barrel length unless you want to run a SBR and have to deal with the annoyances of traveling interstate with a NFA weapon.

      • Tinkerer

        So, for the same “unwieldy” 16 inches of barrel lenght, one sacrifices 9 inches of acceleration, in exchange of shaving off some ounces.

        • Those ounces can make a difference in a match.

          Anyways I am not sure if this is the solution, see my post up above. But to address your concerns, the acceleration is unneeded. 9mm can easily make PF in 7″ of barrel. And there are some arguments that shorter barrels are more accurate on blow back guns.

          • Tinkerer

            I get what you’re saying. As a racing part for USPSA PCC matches, it would be a cheaper alternative than a composite barrel -you know, rifled steel liner wrapped in carbon fiber-.

            …but my cheapskate side weeps at the sight of all that wasted propellant… ;_;

  • FlaBoy

    Potential suppressor….naw, it’s just an extra long linear brake / forward blast director. Of course, since the ATF just makes up things as it goes along, who knows what they’ll do. So what next, a linear brake / forward blast director can only be so long..6 inches…4 inches…2 inches ….??? As to the “even lowering the sound by 1 dcb….just putting an extra long barrel on any gun makes it quieter, especially the lower powered cartridges. The whole thing is stupid.

  • Out of curiousity…does the PS-90 meet the criteria for PCC? Same round is used in the FN FiveSeven,