CMMG 33D430C 8.6 Blackout Barrel Sub-Assembly

The CMMG 33D430C Barrel Sub-Assembly is intended for 8.6 Blackout rifle builds and features a corrosion-resistant nitride finish and 4140CM construction. It is compatible with CMMG Mk3 and DPMS Gen 1 High-Pattern LR-308 upper receivers and accepts 0.750″ diameter gas blocks. This component provides a durable, serviceable option for builders focused on precision and longevity.

Key Specifications

• The manufacturer is CMMG.
• The model is 33D430C Barrel Sub-Assembly.
• The caliber is 8.6 Blackout.
• The finish is Nitride.
• The barrel material is 4140CM.
• The rate of twist is 1:3″.
• Compatible with CMMG Mk3 and DPMS Gen 1 High-Pattern LR-308 upper receivers.
• Accepts 0.750″ diameter gas blocks.

Built as a practical component for custom builds and replacements, the 33D430C prioritizes compatibility and durable construction. The nitride finish and chromoly material selection support long-term use in a range of field and range environments. This sub-assembly is a straightforward choice for experienced builders and shooters who value well-engineered, reliable parts.