Brownells 5/32" x 0.75" L Detent Ball Spring Refill, Pack of 20

This kit eliminates the need to search for the right detent ball spring by providing precisely-sized in-hole coil springs that perfectly complement each size in our detent ball kit. It optimizes your time and resources by including (20) springs for each of the eight most commonly used detent ball sizes in the gunsmithing industry. The springs feature two closed (finished) ends and are long enough to typically be divided into two separate springs, effectively doubling their utility.