LBE AR Bolt Kit Steel is the ultimate upgrade for your AR Bolt Carrier Group. Crafted from 158 Carpenter steel for unmatched strength and durability this kit includes everything you need: a drop-in bolt a firing pin a cam pin and a firing pin retaining pin. Precision-engineered for reliable performance it's a trusted solution for firearm enthusiasts who demand the best in quality and compatibility. Get your AR ready with this high-performance bolt kit built to last.