Stable Performance For 500,000 Compression Cycles
Factory weight, chrome silicon spring kit restores reliable function and long-lasting performance to the M1A and M14. Op rod spring helps ensures consistent cycling; hammer spring gives repeatable sear engagement for a clean breaking trigger.
Big Book Catalog, Issue:70, Page:180
SPECS: Chrome silicon steel. Op Rod Spring - 15-3⁄4" (40cm) long. Hammer Spring - 2-1⁄4" (5.7cm) long. Fits M1A and M14.