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Questions & Answers
will this fit a savage stevens 320 security

The +1 is recommended for use with the 18.5" Stevens 320 barrel length.

by Brandon, Verified Owner, April 6, 2021
Will this fit stevens 320 20 gauge 22 inch barrel? Expert Answer

The Choate Tool Stevens 320 Magazine Extension Matte is designed for 12 gauge models. I recommend contacting Choate Tool to confirm compatibility.

by Hunter, Gear Expert, August 18, 2023
Customer Reviews
Helpful Positive Review Perfect fit for my 18” barrel 320! by Logan, Verified Owner, March 11, 2025
The +1 extension fit perfectly flush with the end of the 18” 320 barrel, but that’s not the best part…. After removing the mag tube dimples, and installing the +1 extension, my mag tube capacity went from 5 to 7!!! It actually gave me +2 capacity wit...
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1/1 found this helpful
Helpful Positive Review Good Experience by TheDudeAbides, Verified Owner, May 15, 2024
The +1 magazine tube extension is easy to install, and in my case, I did not have to permanently modify my Stevens 320 to get an additional round in the tube. If I did drill out the retaining detent as the instructions stated, I'm fairly confident th...
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1/1 found this helpful
Helpful Positive Review extension tube by Anonymous, November 27, 2024
This extension tube fits perfectly! Took out the plug and the old spring replaced it with the new spring went to the range the following day cycle 10 rounds through it and fired it no problems.!!
1/1 found this helpful
Helpful Positive Review Choate +1 320 20 gauge by MutilatedWalker, Verified Owner, February 12, 2025
Installed this on my Stevens 320 in 20 gauge (new version made after 2019). I did have to drill out the dimples on the end of the existing tube. The barrel collar covers the holes in the magazine tube so no big deal. The +1 aligns great with the 18.5...
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1/1 found this helpful
Helpful Positive Review A minor modification is needed to your Stevens 320 by TXRobbo, September 15, 2022
I purchased this item through OP's GunBroker site. It arrived quickly and in great shape. The extension screws perfectly onto my Stevens 320 magazine's threads and the included spring seems appropriate. One thing I would note is that after installat...
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7/7 found this helpful
Helpful Positive Review 2 XTRA ROUNDS by Mike H, Verified Owner, November 29, 2024
2 extra rounds in under 2 minutes. It took longer to add a sling. I bought two of these to put on pistol grip shotguns that I gave to my sister's for Christmas. Biden did that.
2/3 found this helpful
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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 Stevens 320 Magazine Extension Matte

If you're looking around for a great price for the Choate Tool Stevens 320 Magazine Extension Matte, then you have showed up at the right spot..image

These Shotgun Magazine Extensions from the expert product specialists at Choate Tool are fashioned using dependable and reliable resources, to be able to provide you with product which is going to be useful for countless years. Made using some of the very best attainable substances and engineering, these special Shotgun Magazine Extensions from the product professionals at Choate Tool can last an exceptionally long time.

Choate Tool has been developing high-quality products for a number of years, and the Choate Tool Stevens 320 Magazine Extension Matte is their very own way of showing you just how much they care.

Here at OpticsPlanet, we make it our responsibility to receive the most suitable product for all of your preferences, and exhibiting the Choate Tool Stevens 320 Magazine Extension Matte is a thing that we are delighted to offer.

Specifications for Choate Tool Stevens 320 Magazine Extension Matte:

Manufacturer: Choate Tool
Caliber: 12 Gauge
Condition: New
Country of Origin: USA

Features of:

  • Adds one shotshell
  • Machined from steel

Package Contents:

  • Choate Tool Stevens 320 Magazine Extension Matte
  • Spring
  • Clamp

Choate Tool Stevens 320 Magazine Extension Matte Orderable Models

List of Orderable Models

Choate Tool Stevens 320 +1 Round Matte Finish Magazine Extension, 12 Gauge, CMT-06-04-07 , MPN: CMT-06-04-07 , Code: OP3-MZX-CHTL259-CMT-06-04-07-1RD
Choate Tool Stevens 320 +2 Round Matte Finish Magazine Extension, 12 Gauge, CMT-06-04-08 , MPN: CMT-06-04-08 , UPC: 681920835264 , Code: OP3-MZX-CHTL259-CMT-06-04-08-2RD
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