After celebrating many years of service, your rifle deserves a new spring set. These Rifle Service Spring Packs contain the most common springs for each rifle to restore function and reliability. A perfect upgrade for CMP or any military rifle. Kit Includes:XP action springBolt catch springBuffer retainer springExtractor springForward assist springFront sight retainer springHammer springMagazine catch springTakedown pin detent springCharging handle springTrigger spring