Luth-AR AR-15 Spring Kit Black. It includes everything you need to fix common issues and get your rifle back to peak performance. With durable materials and easy-to-use instructions this kit is a must-have for any AR owner. Don t let a broken or lost spring slow you down get your repair kit today. Specifications for Luth-AR AR-15 Spring Kit: Manufacturer: Luth-AR Color: Black Fabric/Material: Metal Gun Model: AR-15 Condition: New Design: AR-15 Package Contents: Luth-AR AR-15 Spring Kit 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 What firearm models does the manufacturer say Luth-AR AR-15 Spring Kit is compatible with? The manufacturer suggests that Luth-AR AR-15 Spring Kit is compatible with AR-15Luth-AR AR-SK: AR-15 Spring Kit Black