Iron Horse Firearms Sentry 12™ Magazine 12″ 3″ 8 Round


An extra OEM detachable box magazine for the Sentry 12™.  It can hold either 2 3/4″ or 3″ shotshells.


  • Polymer and metal construction
  • Capacity 8 2-3/4 or 3″ Shell
  • 12 gauge
  • Made in USA


Compatibility Iron Horse Sentry 12, Blackwater Sentry 12 Type Detachable Box
Max Shell Size (in) 3 Capacity 8
Body Material Polymer Floorplate Material Polymer
Feed Lip Material Metal Follower Material Polymer
Colour Black

Additional Information:

Note:  The manufacturer highly recommend using 2 3/4″ shells in magazines of this capactiy.

*These magazines were not packaged in a container from the manufacturer and will be shipped in bulk packaging.

Manufacturer SKU S12-S128S


Manufacturers, importers, suppliers, and distributors may make changes to their products without fanfare. Such changes can lead to discrepancies between the advertised product and the actual product in inventory. While International Shooting Supplies Ltd. endeavors to correctly describe the actual product in inventory, we will not be responsible for unintentional inaccuracies in text and images of the advertised product.


Iron Horse


12 Gauge

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Please note: International Shooting Supplies does not ship to addresses outside Canada.