17-7 Buffer Spring, Standard, Mil-Spec

Whether you're building a new AR platform from the ground up or upgrading an existing rifle, even small component improvements can have a meaningful impact on long-term reliability and overall performance. One of the simplest upgrades is replacing a standard buffer spring with a higher-quality option designed for consistent operation and durability. When you want dependable performance without a major investment, DoubleStar's Mil-Spec 17-7 Stainless Steel Buffer Spring is a practical upgrade choice. Manufactured in the USA from durable 17-7 stainless steel and electro-polished for smoother cycling, this spring is built to support reliable function and long service life.