The ERGO AR-15 upper receiver spring replacement kit includes 5 important springs that are commonly replaced or easily lost when building a stripped AR-15 upper receiver. The 5-piece kit includes an ejector spring, forward assist spring, dust cover spring, extractor spring and black extractor spring buffer.
- 1 x Ejector Spring
- 1 x Forward Assist Spring
- 1 x Ejection Port Cover Spring
- 1 x Extractor Spring
- 1 x Extractor Spring Buffer