12 Gauge to 45 Caliber Shotgun Adapter

45 Caliber 12 Gauge Shotgun Adapters

(78 customer reviews)

$24.95$99.95

45 Caliber 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 Twist.

Select Length and Chamber below: 
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Description

45 Caliber Shotgun Adapters for 12 Gauge Shotguns

45 Caliber Shotgun Adapters Allow a 12 gauge Break Action Shotgun to use 45 Caliber Ammo.
Compatible with 12 gauge Break Action single as well as double barrel shotguns
For 3″ as well as 2.75″ Chambers
Rifle dimensions are .451″/.445″ with 6 lands and .145″ wide
1:12 twist rate.
Black Oxide coating as a result provides notably better corrosion protection (for maximum corrosion protection keep a thin coat of oil on the insert)
Comes with multiple O-ring configurations.  As a result,  easily achieving a good fit for 12 gauge shotguns.

*Actual Products may vary slightly for some pictures due to design changes.

What are 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.

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)

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.

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Additional information

Weight N/A
Dimensions N/A
Length

2 3/4", 11", 18"

Chamber

LC, LC/.410, ACP, 410 ONLY

Finish

Black Oxide, No Finish (Silver)

78 reviews for 45 Caliber 12 Gauge Shotgun Adapters

  1. Andrew Urbanowski (verified owner)

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    Surprisingly accurate!

  2. Paul Hodges (verified owner)

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    Very high quality.

  3. John C. (verified owner)

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    Works flawlessly. Maintain’s accuracy.

  4. John Adams (verified owner)

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    Once again chaszel shotgun adapters impresses, a real pleasure to shoot 45lc out of a single shot shotgun with an 18 inch adapter, great quality workmanship and accuracy, buy one or twelve i have 6 or seven in different lengths and calibers and all of them are quality adapters.

  5. glenas mckiddy (verified owner)

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  6. Delmar (verified owner)

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    Excellent value

  7. Rick R

    So i have the 357/20ga 18”, 45-70/12ga 18” and just ordered the 20ga/9mm 18” and the 45lc/410 to 12ga 18” adapters. Love the first 2. Can’t wait for the next 2..

  8. Raymond Coffman (verified owner)

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    Adapter is top grade quality, very fun to shoot. Going to make a bunch of black powder rounds on the forth of July and celebrate our independence and freedom with this adapter and the 357 magnum that came the other day.

  9. Brian Millward (verified owner)

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    Great experience they had everything that I needed I was able to send an email for questions about a 20 gauge sent back phone number and I called and was able to talk about it and just really good service had a shipping problem they Ikept in touch with me all the time just couldn’t be happier I will be using them again the love the product by the way they’re accurate easy to use and pretty white wait for what they do

  10. Dan Samuelson (verified owner)

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    Even though I haven’t used this item yet, I am happy with the product. And I do expect good results.. I have an of brand, older 12 ga. Has a SS, or Chromed vent ribbed 30 inch full choke barrel.. I lubed the O-rings that came with the insert and stuck it in. Was a nice snug fit and the break action works well.. It is slightly stiffer with having to slide the O-rings when breaking the action, but once I get it sighted (Is in the instructions) I intend to set it up as a permanent as I have other 12 ga shotguns and want to use this as the 45 colt primary. Took the 45 colt/410 option due to owning a Circuit Judge. The Judge being the same caliber 45 and 410 and having it long enough to both plink and hunt with (bird shot and squirrel so far), and having good results… Anyways,, the insert looks GREAT inside and out, nice shiny smooth finish, and even though it looks great on the outside, I’m talking about looking down the inside.. Took a micrometer to it and specs are good.. I was worried about added weight to the gun, no problem there,, nice lightweight piece..
    The only thing that I didn’t like, not that it’s a big deal and for many reasons that it’s not a big deal..I wish that I could have got a 26 inch insert for the 30 inch barrel though you don’t gain anything from it. And I think that they should make a straight choke for it for the 410 so that it will/would be more accurate for both shot and light game slugs/balls loads… Overall a very nice piece and I would buy another if I had a shorter barreled break action shotgun…

  11. Louis Orman (verified owner)

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    Complete satisfied as always a quality product keep up the good work any chance for a 40 Smith & Wesson?

  12. Eric S. (verified owner)

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    Great workmanship high quality product really enjoy the 45acp in the 18” barrel.

  13. Howard Wallace (verified owner)

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    Excellent product and service

  14. Bradley Dolby (verified owner)

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  15. Raymond Coffman (verified owner)

    I recieved my 18 inch 45lc last week, I took it and tried it out this weekend. Very pleased. Would have already ordered more but everything I reload for is out of stock. 45acp, 45/70, 357-38 special. All out of stock. I will be ordering more as soon as they are available.

  16. Daniel L. (verified owner)

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    As advertised. Well machined. Will buy more calibers in the future when available.

  17. Noel WATTS (verified owner)

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    Great product !!!

  18. Edmundo (verified owner)

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    great quality products

  19. Ralph E Smalley (verified owner)

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  20. Keith Bayless (verified owner)

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    I am very happy with this product! I love making my shotgun versatile in shooting multiple calibers!

  21. Elizabeth Smith (verified owner)

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  22. David (verified owner)

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  23. Michael (verified owner)

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    Outstanding product, accurate groups.

  24. Arcy Swopes (verified owner)

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    Got it fast,just what I wanted.

  25. albert (verified owner)

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    I originally ordered 20 ga in 45lc not realizing it didn’t shoot the 410 shot shell . Chad traded me a 12 ga 45lc/410 barrel because he didn’t have it in 20 ga it fits great in my two 12 ga guns .I now have four adapters and waiting on a 762/25 tokrov adapter . they all shoot great!

  26. Preston Smith (verified owner)

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    Excellent quality. Will definitely buy more.

  27. Randy B. (verified owner)

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    Great purchase experience. The barrel itself is top quality. Looking forward to my next purchase.

  28. Dean S. (verified owner)

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    Quality product! Inserted into a 20″ barreled coach gun, accuracy is ‘minute of front bead’ at 70 yds. with hot Hornady XTPs. It made a perfect combo gun.

  29. Kevin Scott (verified owner)

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    I really like the adapters–this is my 2nd purchase!

  30. Gerald Dennig (verified owner)

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    Terrible accuracy in single shot 311a savage shotgun. Fired at 25 yards with
    Factory and hand loaded ammunition.
    Nicely finished and tight fit.