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TR-1 Upgrade Defense Spring Kit (4.96lbs) | Glock Gen 5


Spring Kit designed to optimise Glock pistols for carry and duty.

Higher spring compression than the TR-1 Challenge and Competition Kit, but lighter than the factory original springs.

Easy to assemble, they are designed to give your defensive firearm a smooth and efficient trigger pull, with harder primer strikes.

Approx weight of striker spring: 4.96lbs

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In stock

SKU: TR-1 100007D/G5 Category: Tags: , ,


Developed based on feedback from military and law enforcement personnel.

The Challenge Kit consists of 2 defense springs :  

  • TR-1 Striker Spring (4.96lbs)
  • TR-1 Firing Pin Safety Spring
Compatible with:

Glock 17 (Gen 5) / 19 (Gen 5) / 19X / 22 (Gen 5) / 23 (Gen 5) / 26 (Gen 5) / 27 (Gen 5) / 34 (Gen 5) / 45


These spring are designed to be used for both carry and competition. Please test the springs extensively before use to ensure that the trigger mechanism functions properly with your firearm.

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