Chaszel 12 Gauge to 45 ACP Shotgun Adapter

45 Caliber 12 Gauge Shotgun Adapters

(124 customer reviews)


45 Caliber Shotgun Adapters for 12 Gauge Shotguns

Adapters come in 4 Lengths

2 3/4″, 5″, 11″ and 18″

Adapters are Fully Rifled with a 1-12 twist expect for the 410 only version which is smooth bore.

Select Length and Chamber below: 


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.

If you are interested in this you may want to look at these similar items 

Additional information

Weight N/A
Dimensions N/A

2 3/4", 11", 18"


LC, LC/.410, ACP, 410 ONLY


Black Oxide, No Finish (Silver)

124 reviews for 45 Caliber 12 Gauge Shotgun Adapters

  1. Anonymous (verified owner)

  2. Robert (verified owner)

    Fit and works very well.

  3. JAMES (verified owner)

    Very well done work and exactly what I wanted to add to my inserts thus giving me three (.45 LC/.410, .357/.38 and now .45 ACP). Soon maybe a 9mm LUGER and .380 APC.
    Many Thanks!!!

  4. Gary S. (verified owner)

    Quality excellent, shipping prompt

  5. KEVIN O’Leary (verified owner)

    The products are great I have bought ten shotgun adapters over the past few years but they have been out of almost all of their products all the time. I have been trying to purchase 24″ rifle barrels for years. The last was a 45-70 barrel and that was over 4 years ago. They haven’t had 24 inch 30-30 barrels in at least 6 years. and 30-30 in 18″in over 2 years I am getting tired of putting my name and email on wish lists. They have a wonderful company and great products—- just not enough of them. I am 76 and have throat cancer. They might lose a customer before I ever see any Rifle caliber 24.” Kevin O’LEARY

  6. DUNCAN (verified owner)

  7. David Hillberry (verified owner)

    This product is absolutely beautiful when you receive it the packaging is incredible. You receive extra o-rings and instructions that are not complicated to follow..
    Upon doing the test firing using the string technique and seeing that everything worked and is going to stay were it’s supposed to, it’s very enjoyable to shoot and the recoil is light enough for young shooters to shoot without worry of a sharp recoil.

    I will be looking forward to purchasing more inserts from these folks again in the future, even without the wife’s permission 😀

  8. Dave Hillberry (verified owner)

    Just tested my 45 colt adapter and I’m very happy with my purchase and I will be looking to purchase more from these folks again

  9. Todd H. (verified owner)

    I bought the 45 lc/410 inserts. Haven’t fired em’ yet, but look well engineered and finished. Hope they get inventory going on the 45-70 again.

  10. jay (verified owner)

    Great product, please make more.

  11. james (verified owner)

    high quality – fit and finish are excellent!

  12. Michael F. (verified owner)

    High quality adapter at a reasonable price!

  13. Gary S. (verified owner)

    Prompt shipping form order date, packaging good, product quality excellent but have not shot it yet.

  14. John S. (verified owner)

    Excellent workmanship, well packaged, quickly delivered, fun to shoot and surprisingly accurate.

  15. Turron Smith (verified owner)

  16. Anonymous (verified owner)

    Very functional, I doubt if I will ever use it.

  17. kenneth moores

    45 lc /410ga is a great woods guns combo a hot 45 colt can be good for black bear or deer and the 410 can fill the meat pot with small game. if you hunt realistic most shots are well under 70 yards with the right caliber insert you can hunt any game you need to hunt

  18. Chris Rickey (verified owner)

    Thank You!!!

  19. KEVIN O. (verified owner)

    Great products! The best customer service I have ever experienced!!

  20. Gary (verified owner)

    Nice product good service.

  21. David Albrecht (verified owner)

    Received this 18″ adapter promptly and packaged perfectly. The fit and finish are remarkable. Though I have not shot it yet, I am confident it shall perform as well as the .380 adapter I purchased previously. I am looking forward to it. I am also looking forward to purchasing adapters in other calibers as they become available. Thank you Chaszel!

  22. James Simpkins (verified owner)

  23. Thomas B. (verified owner)

    Works very well. More accurate than I thought. Awesome idea and product.

  24. Chris (verified owner)

    Bought these for a double barrel project I’m looking forward to!

  25. Anonymous (verified owner)

    This is the 6th adapter I’ve bought from Chaszel. Quality and accuracy is excellent. I have 6 inch and 18 inch adapters. They don’t get any better than this folks so if your on the fence about buying, do it. You won’t be disappointed!

  26. Joe (verified owner)

    Insert is perfect fit. Chazel makes great inserts and has outstanding customer service and fast shipping with great prices. Will be buying more.

  27. John S. (verified owner)

    have not tried them yet but they look good. I have used a 357 adapter on my 20 GA. It met my expectations based on other past reviews.

  28. Larry (verified owner)

    Have to get some ammo to test this one out. Machining looks superb and barrel fit is snug.

  29. ALAN (verified owner)


  30. Daniel Sower (verified owner)

    Love the quality and price. I just wish they were in stock more often….

  31. Adam C. (verified owner)


  32. George (verified owner)

  33. jay wysong (verified owner)

    Great product for the price, I highly recommend this adapter.

  34. Marek (verified owner)

    Extremely well made. Fitt well in my single Ria 12 g shotgun.

  35. Jeff B. (verified owner)

  36. Jeffrey Vicars (verified owner)

  37. Robert C. (verified owner)

    It is so hot that this stuff is available. can you do 50 Beowulf?

  38. Lonnie Wobig (verified owner)

    I haven’t tried shooting them yet but they look great and fit well.

  39. Daniel Knedel (verified owner)

    Fits great in my chinese double barrel coach gun. Hope the 18″ adapter comes back in stock soon. Great product and fast shipping. 👌

  40. Kevin Boyer (verified owner)

  41. Ronald (verified owner)

    Great to deal with

  42. Randy Johnson (verified owner)


  43. Anonymous (verified owner)

    Great simple design!

  44. Wes P. (verified owner)

    I have a few of the shotgun adapters and they are great!!!

  45. Billy Cooper (verified owner)

    Not bad for 2 3/4 insert.

  46. Cyro Alves Filho (verified owner)

  47. Andrew Urbanowski (verified owner)

    Surprisingly accurate!

  48. Paul Hodges (verified owner)

    Very high quality.

  49. John C. (verified owner)

    Works flawlessly. Maintain’s accuracy.

  50. John Adams (verified owner)

    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.

  51. glenas mckiddy (verified owner)

  52. Delmar (verified owner)

    Excellent value

  53. 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..

  54. Raymond Coffman (verified owner)

    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.

  55. Brian Millward (verified owner)

    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

  56. Dan Samuelson (verified owner)

    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…

  57. Louis Orman (verified owner)

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

  58. Eric S. (verified owner)

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

  59. Howard Wallace (verified owner)

    Excellent product and service

  60. Bradley Dolby (verified owner)

  61. 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.

  62. Daniel L. (verified owner)

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

  63. Noel WATTS (verified owner)

    Great product !!!

  64. Edmundo (verified owner)

    great quality products

  65. Ralph E Smalley (verified owner)

  66. Keith Bayless (verified owner)

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

  67. Elizabeth Smith (verified owner)

  68. David (verified owner)

  69. Michael (verified owner)

    Outstanding product, accurate groups.

  70. Arcy Swopes (verified owner)

    Got it fast,just what I wanted.

  71. albert (verified owner)

    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!

  72. Preston Smith (verified owner)

    Excellent quality. Will definitely buy more.

  73. Randy B. (verified owner)

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

  74. Dean S. (verified owner)

    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.

  75. Kevin Scott (verified owner)

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

  76. Gerald Dennig (verified owner)

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

  77. Jerry Kennemer (verified owner)

  78. Peter Johnstone (verified owner)

    Bought one 18”x45ACP. ITS A KEEPER! I was looking for a way to post today’s target fired at the Seattle Police Athletic Association ranges, but I couldn’t find a way to do it with this review. If I had, what you would have seen is 10 shots, handloads, with AA#7 and 180gr clad hollow base bullets printed 2” at 50 yards. Excellent. This H&R 12ga Topper bought at a pawn shop for $40 out the door in 1998, using chaszel’s 18” inserts, is making all my expensive other rifles and shotguns obsolete. Good job Chadzel👏👏👍😁

  79. James Baker (verified owner)

    Quality workmanship but I order the wrong insert and have returned it and it should be arriving there today. He may be sending a corrected insert. Really like dealing with them, very upfront and fair.

  80. Jeff W. (verified owner)

    I have a single shot 12ga in my collection as well as several 45Colt single action revolvers. The 18in 45 Colt adapter is very high quality
    I took it on last outing and worked perfectly, I couldn’t shoot as accurately as the potential it has with just a bead sight but easily hit pop cans at 25 yards. Really expands the versatility of a shotgun.

  81. Roger L. (verified owner)

    Quality is awesome super fast shipping, packing is superb can’t wait to shoot them. My first insert was a 38/357 18
    inch using H&R 12 ga. Was able to get 3 1inch shot patterns at 50 yds. These next Two are 45LC and 45ACP I
    will be going to the range in the next few weeks i will do
    another review then again would like to thank Chad and
    everybody else at Chaszel for a job well done
    Best Roger

  82. Ronald B. (verified owner)

    Beautiful work and fast service. I recommend these over the short ones.

  83. Patrick S Sullivan (verified owner)

  84. James Mullett (verified owner)

    Does just what is intended to do. Nice snug fit in the chamber. Came with extra o-rings.

  85. Eugene Fairfield (verified owner)

  86. Michael P. (verified owner)

    Great quality and great service. Very pleased.

  87. Mark Bowman (verified owner)

  88. John K. (verified owner)

    Quality craftsmanship, excellent attention to detail, and great customer service.

  89. Elliott Penner (verified owner)

  90. Chris Fuller (verified owner)

    This adaptor is amazing and the price is right! I only wish I could order the longer adaptors but the web site says they are out of stock.

  91. John Adams (verified owner)

    Quality adapter, this company puts out the best adapters on the market. I’ve purchased a total of 5 over the years, 2 in 327 federal magnum, 1 in 45lc, 1 in 45acp, 1 in 9mm and all of them are excellent.

  92. Anonymous (verified owner)

  93. Anonymous (verified owner)

  94. Mike Smith (verified owner)

  95. Mark Mayville (verified owner)

    For $30, I’m pretty happy with the fact I can shoot .45 reloads from my old single shot shotgun. Works well.

  96. Ronnie m. (verified owner)

    Waiting on 11 inch in several calibers. Very nice.

  97. Bruce Jensen (verified owner)

    Good job nice looking adapter ,still waiting on the other three great quality

  98. Mark A. (verified owner)

    High quality and reliable performance. Can’t beat it for the price.

  99. Bradford McConnell (verified owner)

  100. Sidney wilbur (verified owner)

  101. Anonymous (verified owner)

    Have not used them yet, but feel tight in gun…glad they are blued and marked with calibre’s….may buy some 12’s, 28, and .410 adapters soon…..Thanks….I like them..Great Price…..!!!!

  102. William B. (verified owner)

    Great barrel adaptor shoots good at 50 yards with bead sight

  103. Raymond Sherrod (verified owner)

    Package arrived in great shape with extra great care took with shipping. Works great.

  104. Anonymous (verified owner)

    delivered in time and in excellent state

  105. Mike G. (verified owner)

    Works as expected. Great customer service. Will buy more.

  106. james (verified owner)

    as always, super quality and service!

  107. Greg Conn (verified owner)

    Works perfect. Very accurate. Didn’t know what to expect at first but was amazed by its accuracy.

  108. Michael Packard (verified owner)

    Awesome adapters very accurate

  109. Brian (verified owner)

    Excellent/superb customer service! The actual item I ordered was not in stock, but I was sent the next best one! At a financial lose to the company, THAT’S INTEGRITY!! And the product worked flawlessly, with incomparable craftsmanship. I would definitely recommend this product to everybody!

  110. STEAVE KANAVOS (verified owner)

    Awesome products! Awesome company!

  111. Scott Campbell (verified owner)

    Really fast delivery and a awesome product.

  112. Mark J. (verified owner)

    Fit and finish are excellent. I haven’t had the opportunity to fire it yet. I’m anticipating great results… stay tuned.

  113. John C. (verified owner)

    Awesome product great price fast shipping.

  114. Alan Terpstra (verified owner)

    So far your product exceeds my expectations and it was really fast service

  115. Peter W. (verified owner)

  116. tracy bowlin

    Fast shipping well made product good fit very impressed looking forward to trying it out.

  117. george conner (verified owner)

    Wow, what a product, fast service, easy order, high marks. Haven’t got to shoot it yet but I am hiding more money from the wife for the 45 70 tube.😜

  118. Steven M. (verified owner)

  119. Earl Hodson (verified owner)

    It’s a great product, I would recommend it to others. Fast service!!

  120. Dillon Ives (verified owner)

    I couldn’t believe the accuracy I was getting from the 45 colt 18″ adapter. I really like the product and wish I knew about them years ago!

  121. Jesse d. (verified owner)

    I’m very happy with your products and I wish your business prosperity

  122. Catherine Fondacaro (verified owner)

    Great, I am looking forwards for my next perches with you. Thank you on your fast delivery. Great product.

  123. Jeffery F. (verified owner)

    Perfect for my scavenger single shot shotgun set up.

  124. Phil Cochran (verified owner)

    I bought the 45 lc version and so far, color me impressed! My wife and I were only able to put 25 rounds or so through it so far but we both love it already. With armscor “cowboy” loads we were able to consistently hit a medium sized water bottle at 15-20 yards with just the bead sight. I can’t wait to put good sights or a scope on this thing and see what it’ll really do with some handloads!

    • Chaszel (store manager)

      Thank you for letting us know. We appreciate you feedback.


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