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Choate Tool Mossberg Sa-20 Shot Magazine Extension Up to $6.00 Off w/ Free Shipping — 2 models

Choate Tool Mossberg Sa-20 + 3 Shot Magazine Extension, CMT-02-04-43
Choate Tool Mossberg Sa-20 + 2 Shot Magazine Extension, CMT-02-04-42
Choate Tool Mossberg Sa-20 + 3 Shot Magazine Extension, CMT-02-04-43
1 of 2 images
Choate Tool Mossberg Sa-20 + 3 Shot Magazine Extension, CMT-02-04-43
Choate Tool Mossberg Sa-20 + 2 Shot Magazine Extension, CMT-02-04-42
2 of 2 images
Choate Tool Mossberg Sa-20 + 2 Shot Magazine Extension, CMT-02-04-42

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Questions & Answers
With the 3-round extension, will it protrude from under the barrel past the muzzle of the barrel? Expert Answer

Most likely no.

by Jeremy, Gear Expert, September 23, 2021
See 1 More Answer
Will the 3 round extension fit the sa 20 tactical? Expert Answer

Yes, the Choate Tool Mossberg SA-20 Shot Magazine Extension is compatible with the SA-20 Tactical.

by Ethan, Gear Expert, May 23, 2023
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
Good Product by Funhouse, Verified Owner, January 3, 2024
The +2 (7 shot) magazine extension fit perfectly. I'd advise that you get the kit that contains the Choate follower, if it's available. This product is a winner.
1/1 found this helpful
Helpful Positive Review
Works with no problems by Robert, Verified Owner, February 27, 2025
Choate magazine tube extension works perfectly on my Mossberg SA20. It did require my gun smith to do minimal machining but I do not modify working guns (home defense) since my life could depend on them. Optics Planet processed my order and shipped i...
Read More...
1/1 found this helpful
Most Recent Reviews
Could be better by J, Verified Owner, December 27, 2024
Instructions are generic between several different makes/models of shotguns. For SA-20 there's a crimp on the end of the magazine tube that needs to be filed off to get the old spring out before the Choate extension can be installed. Not sure how r...
Read More...
Read All 3 Reviews
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made-in-usa-flag Made in USA

Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.

Product Info for Choate Tool Mossberg Sa-20 Shot Magazine Extension

Fits the Mossberg SA20 shotguns, the extension is 6 inches long adds 2 rounds of 2 3/4 inch shells to your gun. Includes Magazine tube, Spring & Barrel Clamp. On some of the SA20 guns you will have to remove the crimp at the end of the magazine tube. This can be done by filing or using a grinder. DOES NOT COME WITH SHELL FOLLOWER.image

Specifications for Choate Tool Mossberg Sa-20 Shot Magazine Extension:

Manufacturer: Choate Tool
Gun Make: Mossberg
Condition: New
Country of Origin: USA

Features of Choate Tool Mossberg Sa-20 Shot Magazine Extension

  • steel construction. Includes mag extension, mag tube spring and clamp.

Package Contents:

  • Choate Tool Mossberg Sa-20 Shot Magazine Extension

Choate Tool Mossberg Sa-20 Shot Magazine Extension Orderable Models

List of Orderable Models

  • Choate Tool Mossberg Sa-20 + 3 Shot Magazine Extension, CMT-02-04-43 , MPN: CMT-02-04-43 , UPC: 681920834731 , Code: OP3-MZX-CHTL186-CMT-02-04-43-3RD
  • Choate Tool Mossberg Sa-20 + 2 Shot Magazine Extension, CMT-02-04-42 , MPN: CMT-02-04-42 , UPC: 681920834724 , Code: OP3-MZX-CHTL186-CMT-02-04-42-2RD

Choate Tool Mossberg Sa-20 Shot Magazine Extension Unavailable & Discontinued Models

List of Unorderable Models

  • USED Choate Tool Mossberg Sa-20 + 3 Shot Magazine Extension, CMT-02-04-43, EDEMO3, Used, Condition Fair, Missing Item , MPN: CMT-02-04-43-EDEMO3 , Code: OP3-MZX-CHTL186-CMT-02-04-43-3RD-EDEMO-MI-D
  • USED Choate Tool Mossberg Sa-20 + 3 Shot Magazine Extension, CMT-02-04-43, EDEMO2, Condition Fair, Used , MPN: CMT-02-04-43-EDEMO2 , Code: OP3-MZX-CHTL186-CMT-02-04-43-3RD-EDEMO-US-D
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