Description: Lantac Extractor Kit, .308/7.62mm Nickel Boron. This Lantac AR-10 extractor kit is manufactured from steel and finished in nickel boron. Featuring a complete and assembled extractor assembly (including the retaining pin, top hat insert, spring and O-ring) for AR-10 rifles calibered in 7.62x51mm and .308 Win. This quality Lantac component is perfect for keeping your rifle in top shooting shape or if your building a system from the ground up.This Kit Includes: Extractor Extractor Retaining Pin Top Hat Insert Extractor Spring O-Ring