The WLA AR10/AR15 Hammer Spring Kit provides reliable replacement springs for your rifle build or maintenance needs with 10 springs per pack for multiple projects or long-term use.WLA Hammer Spring Kit - Model WLA-PAC-1004-10Compatible with AR10 and AR15 rifle platforms10-pack quantity for multiple builds or replacementsPrecision manufactured for consistent performanceEssential component for trigger group assemblyIdeal for gunsmiths firearm enthusiasts and builders who need reliable hammer springs for AR platform rifles. Perfect for maintenance repairs or custom builds.