Sprinco USA Lucky 13 Extractor Insert Viton O-Ring AR-15 13 Pack

The Sprinco USA Lucky 13 Black Extractor Insert & Viton O-Ring 13 PK delivers MIL-SPEC AR-15 extractor inserts and O-rings engineered for durable, reliable performance in rifle bolts and bolt carrier groups, making it a practical maintenance and upgrade option for precision shooters and hunters alike. This 13-pack provides compatible extractor inserts paired with Viton O-rings to help seal, cushion, and maintain consistent extraction under varied field conditions, reducing extractor wear and aiding smooth cycling across a range of sinewy ammo and temperatures. Designed to integrate seamlessly with standard AR-15 components, these inserts and O-rings are built to maintain consistent grip, minimize misfeeds, and support repeatable ejection, which translates to steady follow-up shots in dynamic environments. Whether you're rebuilding a well-used bolt assembly, refreshing worn parts after field use, or stocking spare maintenance basics for range days, Sprinco USA's trusted MIL-SPEC construction offers dependable performance and long-term value. This selection is ideal for shooters prioritizing reliability, quick field serviceability, and compatibility with rifle bolts and bolt carrier groups, ensuring your AR-15 stays ready for precise, repeatable accuracy during critical moments.