The CMMG Mkw-15 Complete Bolt Carrier Group Repair Kit for .458 SOCOM gives you a full suite of replacement parts to rebuild or service your AR-platform upper end. Whether you're doing routine maintenance, replacing worn components, or rebuilding a BCG after extended use, this kit supplies everything needed to get your .458 SOCOM running reliably again. Designed specifically for the .458 SOCOM cartridge, it's an essential item for anyone who shoots this potent intermediate cartridge and wants to keep spares on hand or handle their own gunsmithing.

This complete repair kit includes every critical component of the bolt carrier group assembly. You get a .458 SOCOM-specific bolt, firing pin, firing pin retainer, bolt cam pin, extractor with buffer, ejector with spring, bolt spring, and all necessary pins and screws. Having these parts in inventory means you can swap out worn or damaged pieces without waiting for a parts order or shipping delays—critical when you're in the field or running a consistent training schedule.

The .458 SOCOM is a specialized round built for penetration and power in short-barreled AR platforms, and that means your BCG takes real stress. Keeping a repair kit handy lets you rotate components, troubleshoot feeding or ejection issues, or simply refresh your upper after heavy shooting. CMMG's parts are manufactured to spec and designed to work with standard AR-15 platforms chambered in .458 SOCOM.

The CMMG Mkw-15 Complete Bolt Carrier Group Repair Kit for .458 SOCOM gives you a full suite of replacement parts to rebuild or service your AR-platform upper end. Whether you're doing routine maintenance, replacing worn components, or rebuilding a BCG after extended use, this kit supplies everything needed to get your .458 SOCOM running reliably again. Designed specifically for the .458 SOCOM cartridge, it's an essential item for anyone who shoots this potent intermediate cartridge and wants to keep spares on hand or handle their own gunsmithing.

This complete repair kit includes every critical component of the bolt carrier group assembly. You get a .458 SOCOM-specific bolt, firing pin, firing pin retainer, bolt cam pin, extractor with buffer, ejector with spring, bolt spring, and all necessary pins and screws. Having these parts in inventory means you can swap out worn or damaged pieces without waiting for a parts order or shipping delays—critical when you're in the field or running a consistent training schedule.

The .458 SOCOM is a specialized round built for penetration and power in short-barreled AR platforms, and that means your BCG takes real stress. Keeping a repair kit handy lets you rotate components, troubleshoot feeding or ejection issues, or simply refresh your upper after heavy shooting. CMMG's parts are manufactured to spec and designed to work with standard AR-15 platforms chambered in .458 SOCOM.