
Product detail
CMMG Barrel Sub-Assm 16.1inch MT 4140CM SBN 5.56mm
SKU: CA55DC70A
$196.55
About CMMG Barrel Sub-Assm 16.1inch MT 4140CM SBN 5.56mm
The CMMG Barrel Sub-Assembly 16.1inch MT 4140CM SBN 5.56mm is designed with durability as a key focus, featuring a 4140 chrome molybdenum steel construction and a salt bath nitride finish applied both inside and out. This treatment enhances corrosion resistance and wear protection, extending the service life of the barrel under rigorous use.
This barrel sub-assembly is engineered for custom AR15 upper group builds and includes a properly installed M4 barrel extension. It is headspaced to ensure safe and reliable operation.
Features
- 16.1 inch length
- Medium taper profile for balanced weight and strength
- 4140 chrome molybdenum steel material
- Salt bath nitride finish inside and out for enhanced durability
- 1:7 twist rate optimized for 5.56×45 NATO rounds
- 5.56×45 NATO chamber
- Threaded 1/2-28 muzzle
- Midlength gas port
- .750 inch gas journal diameter
Specifications
- Brand: CMMG
- Model Number (MPN): 55DC70A
- UPC: 815835016153
- Caliber: 5.56mm
- Color: Black
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Frequently asked questions
FAQ
Blvista ships the Cmmg Inc CMMG Barrel Sub-Assm 16.1inch MT 4140CM SBN 5.56mm to U.S. addresses for a flat $11.95, set by its shipping category.
Yes. Blvista accepts unused, unopened returns of the Cmmg Inc CMMG Barrel Sub-Assm 16.1inch MT 4140CM SBN 5.56mm within 30 days by mail. A 30% restocking fee applies and return shipping is paid by you; original shipping is non-refundable. See the Blvista return policy for full details.
Yes, Blvista has the Cmmg Inc CMMG Barrel Sub-Assm 16.1inch MT 4140CM SBN 5.56mm in stock and ready to ship.
The Cmmg Inc CMMG Barrel Sub-Assm 16.1inch MT 4140CM SBN 5.56mm is made by Cmmg Inc (MPN 55DC70A, UPC 815835016153).
Caliber: 5.56mm.
Every Cmmg Inc CMMG Barrel Sub-Assm 16.1inch MT 4140CM SBN 5.56mm sold by Blvista is brand-new and factory-sealed, never used or refurbished.












