X-Caliber Shotgun Gauge Adapter System

The X-Caliber is the most versatile Gauge Adapter system in…

The X-Caliber is the most versatile Gauge Adapter system in the world. It allows you to shoot 11 different caliber rounds from one shooting platform: a single-shot 12 gauge shotgun. Each X-Caliber adapter is made from 7 inches of 4140 chromoly stainless steel. Each adapter is also rifled to increase accuracy.

The calibers of ammunition that the X-Caliber can fire include: .22lc / 38 special / .357 / 9mm / 45 acp / 45lc / .410 shotgun / 12 ga. shotgun / .223 / 7.62×39 / 308.



The adapters are easily stored in a heavy duty canvas case complete with molle-compatible straps on the backside for easy mounting on your bug out pack. The X-Caliber truly gives you options. You choose the right caliber for the task at hand. The X-Caliber equals ten guns for the price of one, saving you money, and reducing weight in your pack.

The X-Caliber Gauge Adapter System is retailing for $449.99.


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  • Paul Beard

    Are you going to make them individually and also in 20 gauge as well.

  • Cory

    Also interested in purchasing these in singles… they look so slick too i might add!

  • Bryant

    HI again I guess this is to explain my question I have a Tactical Overunder and would like to get the adapters in pairs.

  • I (also) am interested in the three rifle caliber adapters ( 7.62×39, .223, .308 ). I already own adapters in all the other calibers ofered in this set (& others not included like .44mag, .32, 16gauge, 28gauge, 20gauge, ect…) I would like the option of purchasing the rifle calibers separately. Also, any other military/rifle calibers ( especially rounds like 7.62x54r, 5.45×39, 7.62×25, ect) that you want to offer would be enthusiastically welcomed!

  • kenny

    im in the id buy them individual boat.id want the 44 magnum , 357 magnum i like the long rifle pistol being a trapper i find these handy but i only need a few of your adapters..

  • Steve Kynard

    I really like the 12 guage to something else idea. I own several adapters and am interested in several of yours but like so many others that have commented I don’t want to buy the whole set. If you ever start selling individual adapters like the other adapter companies you’ll get my business. By the way, what is the bore size of your 7.62 x 39 adapter, American .308 or Russian .311 ? Just need to know what brand ammo would work best in it. Thanks.

  • Joe

    Hi Tim,

    Only interested in the rifle adapters for my 12 gauge- .223, 7.62×39 and 308.

    Will you sell me these three?