STI Magblock 10/16 (9mm) for 120mm Magazine

This Magblock fits the STI Staccato 120mm 16 round 9mm magazines and will limit them to 10 rounds. Easily installed in seconds under the follower, and it is held in place with spring tension alone or can be epoxied if desired.


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SKU: 26229 Categories: ,
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STI Magblock 10/16 (9mm) for 120mm Magazine

  • Easy installation into the follower
  • Fits 16 round 9mm Factory STI 120mm magazines
  • Held in place with spring tension or can be epoxied for a permanent modification
  • Lightweight and will not interfere with magazine reliability
  • Lightweight, efficient design
  • Limits the magazine to 10 rounds of 9mm
  • May need sanding shorter if your magazines have a floorplate locking plate
  • Model: STI_120MM_9MM_10_16
  • No modification to the magazine is required
  • Simple install to make 10/16 STI magazines
  • Tested on factory STI 120mm magazines; the block may need to be modified to work with magazines from other manufactures or sizes