12ga to 9mm back

9mm 12 Gauge Shotgun Adapters

(49 customer reviews)

$24.95$99.95

9mm Shotgun Adapters for 12 Gauge Shotguns

Adapters come in 4 Lengths

2 3/4″ 5″, 11″ and 18″

All Adapters are Fully Rifled with a 1-12 or 1-18″ Twist.

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Description

9mm Shotgun Adapters for 12 Gauge Shotguns

9mm Shotgun Adapters Allow a 12 Gauge Break Action Shotgun to use 9mm Auto in addition to Luger Ammo.

For 3″ Or 2.75″ Chambers

Compatible with Break Action single as well as double barrel shotgun.

9mm Shotgun Adapters Heavy Duty Steel Construction

Rifled:  with a 1:18 twist rate for the 11″ and 18″

1:12 twist rate for 2 3/4″ and 6″

 

9mm  Auto Shotgun Adapters Comes with multiple O-ring configurations.  As a result,  easily achieving a good fit for 12 gauge shotguns.

 

Black Oxide coating as a result provides notably better corrosion protection (for maximum corrosion protection keep a thin coat of oil on the insert)

What are 9mm Shotgun Adapters?

Shotgun Adapters frequently called Chamber Reducers or Shotgun Barrel Inserts. Our shotgun adapters allow you to use other types of ammunition in a Break Action Shotgun. Including double barrel and over and under double barrels in addition to the popular single barrel break action. We offer several different versions to suit your preference in ammunition, as well as length. 12 and 20 Gauge shotgun adapters are our most popular adapters followed closely by the 410. 16 Gauge is something we plan on expanding in the future.

 

9mm Shotgun Adapters

Most of our shotgun adapters come in different lengths to suit your needs. Some like the secure storage and portably of Shell length adapters. Whereas some are looking to get the most fps (feet per second) or accuracy out of their adapter. Black Oxide has become our standard finish. We can offer unfinished adapters during our production if you have requested one.

FPS (Feet Per Second)

9mm Shotgun Adapters
As a general rule, the longer the adapter, the more FPS it produces. However, with low-pressure rounds such as the 45 colt, the fps difference is minimal once past the 11″ length. If you are interested, here is an excellent website that gives a good idea of fps per inch BBTI. All of our shotgun adapters are entirely made in the United States and are an affordable addition to your break action shotgun. Thank you for you interest in our Shotgun Adapters or Chamber Reducers. We are working to make more adapters for more calibers, so you can sign up to be notified here
The video below gives a brief demonstration of how they work.

We are working to make more adapters for more calibers, so you can sign up to be notified here. Thank you for your interest.

 

If you like 9mm Shotgun Adapters, check out our other Shotgun Adapters

Additional information

Weight N/A
Dimensions N/A
Length

2 3/4", 6", 11", 18"

49 reviews for 9mm 12 Gauge Shotgun Adapters

  1. Daniel B. (verified owner)

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    I’m so happy I did my research before buying this! Out of all the brands you folks are way above the rest. The quality and finish on this piece are above expectation. It turned my cheap $100 shotgun into a sweet little carbine. Perfect for teaching my grandsons some basics.

  2. vaughn (verified owner)

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    really like this barrel . picked up 250 fps over handgun shoots 2″ groups at 50 yds and can reach out to my 150 yard gong plate 10″ almost every shot.

  3. David (verified owner)

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    Great product! Not some cheap eBay adapter, quality material, works great and accurate

  4. Cuautemoc Romo (verified owner)

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    Works great. And, they give you extra “O” rings with your purchase. Have it for my Baikal M18

  5. Anton K. (verified owner)

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    nice well crafted equipment. I am using it with Browning Cynergy with no issues.

  6. Richard (verified owner)

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    This is a great way to make an unusable shotgun into something useful.

  7. Anonymous (verified owner)

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  8. Gerald C. (verified owner)

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  9. Ian H. (verified owner)

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    I am amazed by the 12ga to 9mm. I will buy all the adapters you make soon as the come in stock. I’m already on the waiting list. Best $ I’ve ever spent

  10. Eric (verified owner)

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    Great workmanship, perfect fit.

  11. James Mullett (verified owner)

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    Does a good job of what it’s intended for . Accuracy is decent for a reasonable distance. Came with extra o-rings. Good snug fit in the chamber as should be. Thanks.

  12. Francis Pratt (verified owner)

    Amazing product, could not be more happier. This is extremely accurate, it really surprised me. Very fast shipping, and excellent customer service as well.

  13. William B. (verified owner)

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    Arrived before expected. Fit perfectly. Haven’t fired through it yet, but soon. I’m excited to have the adapter. I now have two ‘weapons’ vice one.

  14. Douglas Soucier (verified owner)

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    Easy transaction, quality product, and, most impressively, available items in these uncertain times. A+

  15. Anonymous (verified owner)

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  16. Martin Kennedy (verified owner)

    Ordered this on a Saturday and it’s at my house on Monday! This is how business is done! Product was as described.

  17. Anonymous (verified owner)

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    The owner, Chad, went beyond his way to ensure that I am happy with the product. Highly recommend!

  18. Donald (verified owner)

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    Outstanding quality.

  19. Patrick T. (verified owner)

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    You guys are amazing and I’ll be buying tons of more adapters

  20. bruce (verified owner)

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    Nicely made, looks pretty. Now reality is the rim is too thick for my Model 37 to close on it; not what I wanted.
    It works great in my Mossberg 500(take O-rings off). Very strong, I ran a bunch of overloaded, primer blowing reloads through it without incident(do not do this). Very accurate for a such a short barrel, and has a nice tight match chamber. Bring a brass rod with you to punch out sticky brass. Great for plinking or hunting up close(less damage than a slug). So easy to make they should offer other chamberings.

  21. Fred Tuckey (verified owner)

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    Craftsmanship looks top notch. Haven’t had time to shoot yet.

  22. Ronnie m. (verified owner)

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    Very nice. Waiting on more.

  23. Randy L. (verified owner)

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    The adapter worked like it should .Use oil on it and sum in the barrel where the adapter goes…

  24. William Sims (verified owner)

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    Very good quality, fits chamber well. A few test shot at 10 yards grouped about 2 inches. Can’t wait for mor calibers to become available. This is my second, first is a 30-30 – 18″, very pleased with it as well.

  25. Chris (verified owner)

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    Great value!
    For right at $30 I had a quality (all steel, o-rings, protective finish, and rifled!) product shipped straight to my door.
    I test fired this product out of a 18.5” top break with Hornady Critial Duty +P 135gr flexlock. The muzzle velocity on the box was 1110fps. My chronograph muzzle velocity out of the 2 3/4” adapter was 1075!!!
    Top quality and well manufactured product! Tucked away nicely inside the buttstock.
    Chaszel also emailed me when the product was back in stock and shipped quickly. Buy! Buy! Buy!

  26. Sidney wilbur (verified owner)

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    perfect as always, thanks

  27. Chris

    Great all the way around! Other adapters won’t fit in my Hatfield but the 9mm fit perfect! Got extra o-rings which was awesome! These adapters make u have better accuracy because u know you only have 1 shot to get on target! You can’t bet the price and quality of these adapters! My only complaint is other adapters I would like are out of stock!

  28. Matthew J (verified owner)

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    Very nice for and finish!

  29. James Matteson (verified owner)

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    Prompt delivery, quality device, and shoots acceptably. Very satisfied.

  30. Vincent Milton (verified owner)

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  31. STEAVE K. (verified owner)

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    Best Adapters in the market period!!

  32. Donald P. (verified owner)

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    Great product. Have not had a chance to go to the range yet.I have one of your 357 18in adapters and I love it. If the 9mms shoots as well and I am sure it will I will be very pleased!

  33. Anonymous (verified owner)

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    These are the coolest thing for a shotgun!

  34. John Hickey (verified owner)

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    I’ve received four adapters in the last 90 days or so 12/44 12/ 45 20/357 and a 12/9mm and love them all . The adapters are beautifully made and the accuracy is moa of deer at 50 yards and more depending on you.I expected good punch from the larger one but was impressed with the 12/9mm out of the 18″. Eagerly awaiting 12ga. 30/30 !

  35. Michael (verified owner)

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    Better than expected. Easy to pull spent casings and accurate when timed consistently.

  36. Lawrence Vanderplas II (verified owner)

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    I’m very happy with this adaptor. I haven’t had the chance to take it to the range and test it out yet, but if it’s anything like the other Chaszel shotgun barrel adaptors that I own and have used that were excellent, then I’m sure that I’ll love this one also.

  37. William B. (verified owner)

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    Great barrel adaptor shoots good at 50 yards with bead sight

  38. Mitchell Mensch (verified owner)

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    Use for a snake shot gun 18″ barrel. Holds pattern of about 8″ at 10 feet very good

  39. Raymond Coffman (verified owner)

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  40. Greg Conn (verified owner)

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    Absolutely perfect and works like a charm.

  41. Michael Packard (verified owner)

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    Awesome adapters very accurate

  42. John C. (verified owner)

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    Awesome product at a fraction of the price of there competitors

  43. Charles Harsson (verified owner)

    Chad thank you very much i got your package, it worked i just wanted to say i greatly appreciate it & i will definitely be shopping with you & your fine adapters from here on out.

  44. Jesse d. (verified owner)

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    9mm is a cheap round…. plinking fun for everyone

  45. Brian Blanchette sr (verified owner)

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    Seems like a good value for plinking

  46. Charles Harsson (verified owner)

    Chad yes please that would probably work just fine I just ordered mine on the 8th of april so yall have my information.

  47. Charles Harsson (verified owner)

    I bought one of the 2 3/4 9mm-12 gauge adapters and it’s a really really tight fit in my nef single shot 12 gauge it has a 3″chamber so it should fit just fine, I also added a light coat of rim oil to the adapter but no luck it’s still a really tight fit, hopefully the more i shoot with it the more it breaks in and losings up in time….

    • Chaszel (store manager)

      I can will send you some slightly smaller O’rings to try if that is ok with you

      Chad

  48. Michael (verified owner)

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    Fits well. Shoots extremely accurate. I need to pry the 9mm luger casings out as they seem to case form to the 9mm auto chamber. A small flathead screwdriver suffices. It is not too hard at all.

  49. Robert Harwood (verified owner)

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    By far the best adapters on the market. Even with just the 2 3/4″ I can shoot fist sized groups at 50 yards with open sights

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