The White Label Armory AR15/AR10 Bolt Catch Detent Spring 10-Pack provides precision-fit, Mil-Spec springs essential for the reliable function of your bolt catch assembly. Compatible with both AR15 and AR10 platforms, these springs are manufactured from high-quality materials to deliver consistent tension and performance. Made in the USA, they’re ideal for builds, maintenance, or keeping spares on hand for future repairs. Trust in WLA's commitment to quality and reliability.