TR-1 Upgrade Defense Spring Kit (4.96lbs) | Glock Gen 1-4

Developed based on feedback from military and law enforcement personnel.

The Challenge Kit consists of 3 defense springs :  

• TR-1 Striker Spring (4.96lbs)
• TR-1 Trigger Spring
• TR-1 Firing Pin Safety Spring

Compatible with:

Glock 17 (Gen 1 – 4) / 17C (Gen 1-3) / 17L (Gen 1-3) / 19 (Gen 1 – 3) / 22 (Gen 1 – 3) / 22C (Gen 1-3) / 23 (Gen 4) / 23C (Gen 1-3) / 24 (Gen 1 – 3) / 26 (Gen 1-4) / 27 (Gen 1-3) / 32 (Gen 1-4) / 33 (Gen 1-4) / 34 (Gen 1-4) / 35 (Gen 1-4)

Note:

Please test the springs extensively before use to ensure that the trigger mechanism functions properly with your firearm.