The Strike Industries AR-15 lower Receiver spring replacement kit includes 9 important spring that are commonly replaced or easily lost when building stripped AR-15 lower receivers. The 9-Piece kit includes spring for the bolt catch, disconnector, buffer retainer, trigger, hammer, magazine catch, selector, and two detents.

Package include:
– 20 x Bolt Catch Spring
– 20 x Buffer Retainer Spring
– 20 x Trigger Spring
– 20 x Hammer Spring
– 20 x Disconnector Spring
– 20 x Magazine Catch Spring
– 20 x Selector Spring
– 40 x Detent Spring
 
Features:
– Replace worn springs
– Commonly used springs
– Essential for a gunsmith or AR owner