Brownells Detent Ball Refill 3/16" Diameter (4.8mm) 20-Pack

The Brownells Detent Ball Refill is a 20-pack of 3/16" (4.8mm) diameter detent balls designed for gunsmithing applications. Detent balls are used in a variety of firearm assembly and repair tasks where spring-loaded retention is required. This convenient refill pack ensures gunsmiths and armorers always have replacement balls on hand for pins, selector detents, and other small-part retention systems.