FailZero 458 SOCOM Bolt Carrier Group (No Hammer) – AR-15 Platform

The FailZero 458 SOCOM Bolt Carrier Group is engineered for AR-15 platform rifles chambered in 458 SOCOM, delivering the reliability needed for heavy-caliber performance. This BCG replaces factory components with a system designed to handle the increased pressures and bolt thrust of the 458 SOCOM cartridge. Built for shooters who demand consistent function in hunting or tactical applications with this powerful cartridge.

The entire carrier group features FailZero's proprietary nickel-boron (NiB) coating, which provides permanent dry lubrication and exceptional corrosion resistance. This coating reduces friction and carbon buildup, making cleaning significantly easier than traditional phosphate finishes. Machined to mil-spec dimensions from high-grade steel, this is a drop-in replacement for standard AR-15 BCGs when upgrading to or maintaining a 458 SOCOM upper. Does not include fire control hammer—for use with your existing lower parts kit.

• Part Type: Bolt Carrier Group
• Compatible Firearms: AR-15 platform chambered in 458 SOCOM
• Material: High-grade steel
• Finish: Nickel-Boron (NiB) coating
• Installation: Drop-In
• Includes: Bolt carrier, bolt assembly, firing pin, cam pin, retaining pin (no hammer included)