Contains:
- UR-05 Ejection Port Spring
- LR-32 Hammer Spring
- LR-22 Trigger Spring
- UR-07 Forward Assist Spring
- LR-16 Magazine Catch Spring
- LR-26 Selector Spring
- LR-31 Disconnector Spring
- LR-09 Bolt Catch Spring
- BT-08 Extractor Spring
- LR-14 Detent Spring (x2)
- LR-02 Buffer Retainer Spring
- UR-17 Charging Handle Spring
