Mk47 Complete Bolt Carrier Group Repair Kit 7.62X39Mm

When your 7.62x39mm AR platform rifle needs a bolt carrier group overhaul, the CMMG Mk47 Complete Bolt Carrier Group Repair Kit gives you all the wear parts in one package. Whether you're doing preventive maintenance after thousands of rounds or replacing components that have seen hard use, this kit bundles the individual pieces most commonly swapped during BCG service. It's the kind of thing you'll appreciate having on hand if you run an AK-pattern or AK-compatible AR build.

The kit includes everything needed for a complete bolt carrier group refresh: a new 7.62x39mm bolt, firing pin, bolt cam pin, extractor assembly with its pin and springs, ejector and ejector spring, gas ring, gas key with screws, firing pin retainer pin, and a roll pin. Rather than ordering parts individually or waiting for supply issues to force you toward a full BCG replacement, this kit lets you service and restore your existing carrier. That matters for shooters who want to keep rifles running smoothly without unnecessary downtime or expense.

CMMG's Mk47 line is built around the realities of shooting 7.62x39mm through modern rifle platforms. This repair kit is designed with that specific cartridge and platform in mind—not as a generic solution. If you're into precision shooting, hunting, or just want to maximize uptime on a rifle that sees regular use, keeping a dedicated BCG maintenance kit on the shelf is smart practice.

Key Features

• Complete bolt carrier group replacement parts for 7.62x39mm rifles
• Includes bolt, firing pin, extractor assembly, ejector, gas key, gas ring, and all fasteners
• Designed for CMMG Mk47 platform rifles
• Allows full BCG service without replacing the entire carrier

Specifications

Frequently Asked Questions

What's included in the CMMG Mk47 BCG repair kit?

The kit contains a complete set of bolt carrier group wear parts: bolt, firing pin, firing pin retainer pin, bolt cam pin, extractor assembly (pin, springs, and O-ring), ejector with spring, gas ring, gas key with fasteners, and a roll pin. It's a full-service package for BCG maintenance.

Will this kit work on any 7.62x39mm rifle?

This kit is specifically designed for CMMG Mk47 platform rifles. Always verify compatibility with your specific rifle before ordering parts.

Do I need any special tools to service my bolt carrier group with these parts?

We've provided the parts themselves; refer to your rifle's manual or a qualified gunsmith for guidance on installation and any specialized tools that may be required for your specific platform.

Can I use this to rebuild a worn-out BCG?

Yes—the kit gives you all the major wear components and fasteners needed to refresh a bolt carrier group. This approach is often more economical than replacing an entire carrier assembly.