The Strike Industries m?4AR-15 lower Receiver spring replacement kit includes 9 important springs that are commonly replaced or easily lost when building stripped lower receivers. The 9-Piece kit includes springs for the bolt catch, disconnector spring, buffer retainer spring, trigger spring, hammer spring, magazine catch spring, selector spring and two detent springs.
| FireArm | No |
| Finish | Black |
| Material | Various |
| Type | Spring Kit |
| Model | Lower Receiver Spring Kit |
