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Carlson's Choke Tubes Stoeger M3000/3500 Magazine Extension
As Low As $76.49 Save 15%
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Most Helpful Negative Review Carlson extended magazine tube
Well-built and mounts extremely easy. However the spring they send you is no longer than the spring that was already in my shotgun so it does not always cycle properly. Great tube and good price but count on having to buy an aftermarket spring.
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Stoeger extension magazine

by Tube, Verified Owner from IA, United States Written on March 13, 2025
It was good until the metal hold down strap that goes from the tube to the barely kept sliding off. I tightened it until you can't tighten it no more and still slides up
Pros:
  • Holds alot of amo
Cons:
  • Tube strap wont stay on
Would recommend: Yes
Was it helpful to you? Yes | No

Okay mag extension

by Danny, Verified Owner from CA, United States Written on September 14, 2022
The 8 rd extension sticks out past my 18.5 inch barrel by about an inch and a half. While this may not be a problem it drove me crazy a little bit. Also, the tube will work itself loose no matter how tight you crank it.
Would recommend: Yes
Was it helpful to you? Yes | No

10 shot magazine extension

by Vinnie, from MT, United States Written on December 24, 2021
Went together super easy and it only took 2 minutes max. The gun preformed flawlessly . Tried 2.75 and 3 inch shells with no problems. I only wish they made a 12 or 14 shot tube. A plug would would be nice addition to the extended tube as for shooting migratory birds you can only have three shells in your gun unless you are on a special snow goose hunt in the spring. Over all I would recommend this product and the folks at Carlson’s to fulfill your shooting needs.
Pros:
  • Extra rounds for snow geese and upland birds.
Cons:
  • Not really any cons.
Best Used for:
  • home defence
Would recommend: Yes
Was it helpful to you? Yes | No

Not the best

by Sdhunter, Verified Owner from SD, United States Written on March 28, 2018
The tube tends to work loose and the support that comes with it works its way down the barrel and creates a rub even if its cranked down. The rub was enough to scrape coating of the barrel. The tube does work however and feeds in my gun just fine.
Would recommend: No
Was it helpful to you? Yes | No
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