Daniel Defense Carbine Buffer Spring M4 Receiver Extension 0.93 Diameter 10.25

The Daniel Defense Carbine Buffer Spring for M4-type receiver extension tubes delivers reliable, factory-grade performance for rifle builds and upgrades, combining precision engineering with durable materials to ensure consistent cycling and recoil control in typical M4-pattern platforms. This buffer spring is designed to fit M4-type receiver extension tubes, with an outside diameter of 0.93 inches and an overall length of 10.25 inches, providing a snug, dependable match to standard carbine-length gas systems. Built by Daniel Defense, a trusted name in rifle parts, this spring contributes to smooth, predictable operation across a variety of cycling conditions, helping shooters achieve reliable bolt meet and lockback while maintaining proper buffer travel. Ideal for refinishing, maintenance, or parts upgrades within rifle builds or rebuilds, the component's precise dimensions support repeatable performance in mid-length and carbine configurations alike. Whether you're conducting routine maintenance, assembling a spare parts kit, or upgrading to optimize trigger resets and follow-through, this buffer spring offers compatibility and consistency that serious shooters rely on for range days and field use.