Thumb Actuated Tube Selector for Kel-Tec KSG Bullpup Shotgun

In what many a fan of the platform will exclaim “Finally!”, the aftermarket has stepped up with firing-hand compatible tube selector for the Kel-Tec KSG bullpup shotgun. The product of a Plymoth, Massachusetts company called “Solutions De Innovation LLC” the “Feed Tube Selector Switch” (FTSS) was designed to solve a weapons manipulation problem that has beset the KSG since its introduction.

The problem is the dual tube architecture of the KSG do not automatically switch over to the other tube upon expenditure of its ammunition. Touted as a “feature” allowing the shooter to switch between two types of ammunition, practically it is pain in the arse. Few users would load different tubes with different ammunition, especially with the loads being so different (say non-lethal and buck-shot or slugs and bird-shot). As such, KSG users had to train themselves to count rounds or swap tubes upon an empty chamber.


The FTSS replaces the standard tube selector by extending below the ejection port and through an elbow, putting a lever near the firing hand. The knob at the end is shooting-hand accessible, so one can “seamlessly” swap to the second tube.

Retail for the piece is set at $96.50. It is steel constructed, with a final blued finish. It has a lifetime warranty, including shipping and handling reimbursement. Those interested can pick one up at the store. 

The FTSS is patent pending.

Nathan S

One of TFB’s resident Jarheads, Nathan now works within the firearms industry. A consecutive Marine rifle and pistol expert, he enjoys local 3-gun, NFA, gunsmithing, MSR’s, & high-speed gear. Nathan has traveled to over 30 countries working with US DoD & foreign MoDs.

The above post is my opinion and does not reflect the views of any company or organization.


  • PK

    Oh. Duh. That’s a good, useful, simple product that’s fulfilling an obvious need. A real “why didn’t I think of that” moment!

  • DanGoodShot

    96.50? What a randomly weird and high price.

    • JSmath

      Lifetime warranty including shipping and handling, so it actually makes a bit of sense. As long as you’re expecting the company to be around over ten years from now.

      • mafirearmsafety

        Why not, no one thought Ruger would survive against all the ‘big’ names…….

        • JSmath

          Ya, well, Ruger made impressive firearms that were functional and competitively priced for their time. This is a switch.

          • mafirearmsafety

            My only point was everyone has to start somewhere.

  • something something plastic mumble barrel mumble 5000 rounds something COOL KIDS MAKE FUN OF KEL-TEC LOLOL

    This is a great accessory for a neat shotgun, but the price seems a wee bit excessive for so simple a stamped/milled part.

    • JSmath

      Looks like stamped welded to milled part; The lifetime warranty including s&h bit seems like the intended customer bait, but I wouldn’t expect a company that has one product to stick around for long.

      • mafirearmsafety

        Every company starts somewhere, their first product will be a springboard for more I am sure. We should support made in USA.

    • mafirearmsafety

      I know a wee bit about research and development along with patent attorney fees, marketing, advertising starting a company, materialsI, etc, etc, I don’t think the price is bad for a true functional improvement and made in the USA. Would it be from china I would not think much of it, and would know the quality would not be there.

  • Nicholas C

    There are already cnc milled longer switches. Tim Harmsen and Hank Strange both reviewed one that you can access with your forearm.

  • thedonn007

    Did I read that correctly, it blocks a portion of the ejection port? That does not seem like a good idea.

  • Guy

    Does it take Glock mags?

  • It amazes me that the K-T has not put out an alternating tube version. Yes, some engineering would be involved, but it can’t be THAT hard, given that other bullpup shotguns managed it.

    Give me an alternating-tube version, and I’d buy a KSG soon thereafter.

    • Sianmink

      Seems to me the aftermarket could mod this in easily, should someone be motivated enough.

      • Yet, bizarrely, they haven’t done so… which makes me think it might not be so easy. I suspect it might need to be linked to the pump mechanism, which may make it a somewhat invasive mod.

  • Austin

    I can’t believe something like this wasn’t in the list of improvements for gen 2

  • TDog

    I had enough problems with switching tubes the original way… I don’t have much faith that an add on will increase reliability.

  • mafirearmsafety

    I have one now and it is like night and day from the original, and it is solid steel, very rugged. I have spent more on cosmetics on some of my guns that did nothing for function. This is definitely a functional improvement.

  • GarolS

    that little piece cost WUN HUNNERT DOLLERZ!?!?!?! Fekkin’ thief!

    g-dammit. I’ll take two!

  • The American Crusader

    Never understood the complaints about the KSG not automatically switching tubes. When you run dry, one click and a pump and you have a two-second reload. I prefer my KSG to my Benelli M4

  • LetsTryLibertyAgain

    The reason for the two independent magazine tubes is legal, not technical. The laws in nanny states are typically written to require a magazine with ten rounds or less, as a state law holdover from the now expired federal 1994 Assault Weapons Ban. If there was a second magazine that instantly (or easily) switched when the first was empty, that would almost certainly be interpreted as being a single magazine for legal purposes. The dual magazine design is not a feature in the sense that shooters will want to carry and use two types of shells. It’s a feature because it allows customers to legally own a 12+1 shotgun in states with a ten round magazine limit.

    I expect California to pass a special law outlawing the KSG any day now… or if not, to require a bullet button on the magazine selector switch. :-/