Description
Every so often a gun comes along that solves a dozen problems at once, and the Chiappa M6 X-Caliber is one of them. It starts as a folding over/under combination gun with an 18.5 inch 12 gauge barrel up top and an 18.5 inch .22 WMR barrel below, each with its own trigger so you can pick your shot instantly. Then Chiappa includes the X-Caliber adapter set: eight fully rifled inserts that drop into the 12 gauge barrel and let you fire .380 ACP, 9mm, .38 Special/.357 Magnum, .40 S&W, .44 Magnum, .45 ACP, .410/.45 Colt, and 20 gauge. Add it all up and this one firearm handles 12 different chamberings. If you can scrounge ammo for it, odds are the M6 can shoot it.
Built on a Proven Survival Gun Design
The M6 traces its roots back to the classic Air Force aircrew survival gun, and Chiappa's version keeps that no-frills toughness while adding modern touches. The blued steel barrels sit in a folding break-open action that collapses for compact storage, and the whole thing measures 34.6 inches deployed while weighing right around six pounds. The skeletonized steel stock has a polypropylene foam insert that holds spare shotshells and rimfire rounds, plus a cleaning kit tucked inside the stock itself. The 12 gauge barrel takes Rem Choke pattern tubes and ships with a modified choke installed, so you're not locked into one pattern.
Sights and Rails That Earn Their Keep on the M6 X-Caliber
Aiming is handled by a red fiber optic front sight paired with an M1 carbine style rear that adjusts for windage and elevation, a setup that stays visible in dim timber or fading light. Quad Picatinny rails on the receiver give you room for a red dot, light, or whatever else your setup calls for. A top tang manual safety keeps operation simple and ambidextrous.
For pilots, ranchers, packrafters, or anyone building out a truck or cabin gun, the M6 X-Caliber is about as versatile as a single firearm gets. It takes up almost no space, asks for almost no maintenance, and handles everything from squirrels to slugs.
Key Specifications
- Manufacturer: Chiappa Firearms
- Model: M6 X-Caliber Folding Shotgun/Rifle Combo
- MPN: CF500.185
- UPC: 8053670716384
- Caliber/Gauge: 12 Gauge (3" chamber) over .22 WMR
- Action: Break-open over/under, folding
- Barrel Length: 18.5"
- Overall Length: 34.6"
- Capacity: 1 + 1
- Triggers: Double triggers, one per barrel
- Sights: Fixed red fiber optic front, M1 carbine style adjustable rear
- Choke: Rem Choke pattern, modified tube included
- Stock: Skeletonized steel with polypropylene foam insert and ammo storage
- Rails: Receiver-mounted quad Picatinny rails
- Safety: Top tang manual safety
- Finish: Blued/matte black
What’s Included
- Chiappa M6 folding shotgun/rifle combo
- X-Caliber adapter set with 8 fully rifled inserts (.380 ACP, 9mm, .38 Spl/.357 Mag, .40 S&W, .44 Mag, .45 ACP, .410/.45 Colt, 20 Gauge)
- Modified choke tube (installed)
- Cleaning kit (stored in the stock)
- Owner's manual
Frequently Asked Questions
How many calibers can the Chiappa M6 X-Caliber shoot?
Twelve total. You get the native 12 gauge and .22 WMR barrels, plus eight rifled adapters that slide into the 12 gauge barrel covering .380 ACP, 9mm, .38 Special/.357 Magnum, .40 S&W, .44 Magnum, .45 ACP, .410/.45 Colt, and 20 gauge. That flexibility is what makes it such a popular pick for survival kits and remote travel.
Does the M6 fold down for storage?
Yes, the break-open action folds roughly in half, taking it well under its 34.6 inch deployed length. That makes it easy to fit in a pack, behind a seat, or in an aircraft survival kit. It weighs right around six pounds, so it carries easily too.
Can I mount a red dot or light on this gun?
Absolutely. The receiver has Picatinny rails on the top and sides, so there's room for an optic up top and a light or laser on the side rails. The included fiber optic front and adjustable rear sights work well on their own if you'd rather keep it slick.
Does the 12 gauge barrel accept choke tubes?
It does. The barrel is threaded for Rem Choke pattern tubes and comes with a modified choke installed. That lets you tighten or open up your pattern depending on whether you're tossing slugs, buckshot, or birdshot.





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