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Chiappa Firearms 12GA .380 ACP/9mm/.357 MAG/.38 SPL Caliber Conversion Kit w/ Case 970.387 Color: Black, Finish: Blued, Fabric/Material: Steel, 17% Off w/ Free Shipping

Chiappa Firearms 12GA .380 ACP/9mm/.357 MAG/.38 SPL Gun Gauge Adapter Set w/ Case, Set of 8, 1 Round, Black, 1, 970.387
Chiappa Firearms 12GA .380 ACP/9mm/.357 MAG/.38 SPL Gun Gauge Adapter Set w/ Case, Set of 8, 1 Round, Black, 1, 970.387
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Chiappa Firearms 12GA .380 ACP/9mm/.357 MAG/.38 SPL Gun Gauge Adapter Set w/ Case, Set of 8, 1 Round, Black, 1, 970.387

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Questions & Answers
Does this come with the 20 gauge adapter Expert Answer

Yes a 20 gauge adapter is included.

by Jonathan D., Gear Expert, June 16, 2018
See 1 More Answer
can a .44 special be fired in the .44 magnum?

Yes but don’t try the reverse. 44 special can be used in gun chambered for 44 mag but 44 mag should not be use in gun chambered for 44 special

by David Sikes, Verified Owner, June 29, 2025
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
looks like excellent quality by sonny54, Verified Owner, December 28, 2024
I worked in a machine shop over 25 years, and these look very nice. I have not yet put any rounds through them, but visually they look excellent. the only complaint that I have is that the .44magnum adaptor is not marked .44magnum/.44 special. the .3...
Read More...
1/1 found this helpful
Helpful Positive Review
Awesome product by The dude, March 26, 2022
This item is exactly as described. Everything arrived intact and even included the instructions. I look forward to trying them out as soon as the shotgun arrives.________________________________________
1/1 found this helpful
Helpful Positive Review
A must have kit for preppers! by Mixflip, July 23, 2017
I absolutely love having this kit at my disposal. It's dual purpose as I can shoot my H&R Topper 88 shotgun with my kids and have fun with A lot of ammo...and in an emergency I can shoot almost any ammo I may find if ammo is in demand and hard to fin...
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3/3 found this helpful
Most Recent Reviews
Great for a bug out bag by Billybrad, Verified Owner, January 8, 2026
You can't ask for a better gift for a person who loves guns
Most Recent Reviews
x caliber adapters by Ryan, December 30, 2025
very well constructed. not used them yet but exited to
Read All 5 Reviews
Color:
Black
Finish:
Blued
Gun Model:
Universal
Caliber:
.38 Special, .40 S&W, .44 Magnum, .45 ACP, .45 Colt, .357 Magnum, .380 ACP, .410 Bore, 9mm Luger
Magazine Capacity:
1 Round

Code: 33-CNC-970387-970-387-1RD

MPN: 970.387

UPC: 8053670711495

List: $410.00Save 17%
$339.99

Product Info for Chiappa Firearms 12GA .380 ACP/9mm/.357 MAG/.38 SPL Caliber Conversion Kit w/ Case

Gauge Adapter Set to expand compatibility from 380ACP, 9MM, 357MAG/38SPL, 40S&W, 44MAG, 45ACP, .410/45COLT, 20GA cal. to a 20GA shotgun. Each 7? adapter has a lip for better cartridge extraction. It comes in a green bag. Only for break action shotgun.image

WARNING: California`s Proposition 65

Specifications for Chiappa Firearms 12GA .380 ACP/9mm/.357 MAG/.38 SPL Caliber Conversion Kit w/ Case:

Manufacturer: Chiappa Firearms
Color: Black
Finish: Blued
Fabric/Material: Steel
Gun Make: Universal
Gun Model: Universal
Caliber: .410 Bore, .44 Magnum, .45 Colt, .38 Special, .357 Magnum, 9mm Luger, .380 ACP, .40 S&W, .45 ACP
Magazine Capacity: 1 Round
Magazine Included: No
Gauge: 12

Package Contents:

  • Chiappa Firearms 12GA .380 ACP/9mm/.357 MAG/.38 SPL Caliber Conversion Kit w/ Case

Chiappa Firearms 12GA .380 ACP/9mm/.357 MAG/.38 SPL Caliber Conversion Kit w/ Case Orderable Models

List of Orderable Models

  • Chiappa Firearms Adapter System for 12 Gauge Barrel, Fits Chiappa X-Caliber, Set of 8 970.387 , MPN: 970.387 , UPC: 8053670711495 , Code: 33-CNC-970387-970-387-1RD
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Last updated 2026-08-13 UTC.