Brownells Detent Ball Refill 1/4" Diameter (6.3mm) 20-Pack

The Brownells Detent Ball Refill Kit provides 20 replacement detent balls measuring 1/4" (6.3mm) in diameter, ideal for gunsmithing applications requiring precise spring-loaded detent assemblies. These balls are commonly used in AR-style receivers, bolt carriers, and other firearm mechanisms where detent retention is critical. A practical bulk replacement supply for gunsmiths and armorers performing repairs or builds.