ERGO AR-15 Upper and Lower Spring Replacement Kit

ERGO AR-15 Upper and Lower Spring Replacement Kit Upper Spring Kit: Five piece kit includes: Ejector Spring, Forward Assist Spring, Port Cover Spring, Extractor Spring, Extractor Spring Buffer. Lower Spring Kit Nine piece kit inludes: Bolt Catch Spring, Disconnector Spring, Buffer Retainer Spring, Trigger Spring, Magazine Catch Spring, Hammer Spring, Selector Spring, two Detent Sprin More »