Brownells Detent Ball Spring Refill 5/32" (4.0mm) 20-Pack

The Brownells Detent Ball Spring Refill Kit provides 20 replacement detent ball springs measuring 5/32" (4.0mm) in diameter and 3/4" in length. Designed for gunsmiths and armorers, these springs are used to maintain proper detent function in a variety of firearms and gunsmithing fixtures. Having a supply of these small but critical components on hand ensures efficient repairs and builds without delays.