Detent Ball 5/16in

The Detent Ball 5/16in is a critical precision component used throughout tactical, military, and law enforcement firearms and equipment systems. This small but essential part serves as a spring-loaded retention element in bolt carrier groups, selector switches, and modular weapon platform assemblies. Whether you're assembling a custom rifle, maintaining duty weapons, or building replacement component kits, the detent ball ensures positive engagement and smooth mechanical function under field conditions.

Manufactured to standard specifications, this 5/16-inch detent ball delivers reliable spring tension and mechanical retention without binding or excessive play. The spherical design allows uniform pressure distribution and ensures consistent detent force across all firing cycles and operational environments. Its minimal weight—just 0.01 lbs—means zero impact on weapon balance or cycling dynamics, while the precision ball geometry resists wear and maintains its detent characteristics through thousands of rounds of duty-grade use. This component is engineered to work seamlessly within spring-loaded assembly pockets found in AR-pattern platforms, modular rifle systems, and legacy tactical carbine configurations.

Armorers, gunsmith professionals, and tactical equipment technicians rely on correct detent ball specifications to maintain weapon reliability and prevent selector creep or unintended bolt catch release. This component is essential for field stripping, building, or maintaining AR-15, AR-10, and compatible modern rifle platforms. Keep spare detent balls in your maintenance kit—they're easily lost during disassembly and critical to proper reassembly. Compatibility with standard 5/16-inch detent spring cavities makes this a universal replacement choice for any shooter who demands precision mechanics and consistent performance.